A shiny gray element with atomic symbol As, atomic number 33, and atomic weight 75. It occurs throughout the universe, mostly in the form of metallic arsenides. Most forms are toxic. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), arsenic and certain arsenic compounds have been listed as known carcinogens. (From Merck Index, 11th ed)
Disorders associated with acute or chronic exposure to compounds containing ARSENIC (ARSENICALS) which may be fatal. Acute oral ingestion is associated with gastrointestinal symptoms and an encephalopathy which may manifest as SEIZURES, mental status changes, and COMA. Chronic exposure is associated with mucosal irritation, desquamating rash, myalgias, peripheral neuropathy, and white transverse (Mees) lines in the fingernails. (Adams et al., Principles of Neurology, 6th ed, p1212)
Inorganic or organic compounds that contain arsenic.
Binary compounds of oxygen containing the anion O(2-). The anion combines with metals to form alkaline oxides and non-metals to form acidic oxides.
Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water.
An arsenical that has been used as a dermatologic agent and as an herbicide.
Inorganic salts or organic esters of arsenious acid.
Inorganic or organic salts and esters of arsenic acid.
Water that is intended to be ingested.
Inorganic compounds that contain sodium as an integral part of the molecule.
Means or process of supplying water (as for a community) usually including reservoirs, tunnels, and pipelines and often the watershed from which the water is ultimately drawn. (Webster, 3d ed)
The thin, horny plates that cover the dorsal surfaces of the distal phalanges of the fingers and toes of primates.
The exposure to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals.
Adverse effect upon bodies of water (LAKES; RIVERS; seas; groundwater etc.) caused by CHEMICAL WATER POLLUTANTS.
Constructions built to access underground water.
Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.
The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.
Substances or organisms which pollute the water or bodies of water. Use for water pollutants in general or those for which there is no specific heading.
Liquid water present beneath the surface of the earth.
An arsenic derivative which has anticoccidial action and promotes growth in animals.
Spectrophotometric techniques by which the absorption or emmision spectra of radiation from atoms are produced and analyzed.
A plant genus of the family PTERIDACEAE. Members contain entkaurane DITERPENES. The name is similar to bracken fern (PTERIDIUM).
Oxidoreductases that specifically reduce arsenate ion to arsenite ion. Reduction of arsenate is a critical step for its biotransformation into a form that can be transported by ARSENITE TRANSPORTING ATPASES or complexed by specific sulfhydryl-containing proteins for the purpose of detoxification (METABOLIC DETOXIFICATION, DRUG). Arsenate reductases require reducing equivalents such as GLUTAREDOXIN or AZURIN.
The presence in food of harmful, unpalatable, or otherwise objectionable foreign substances, e.g. chemicals, microorganisms or diluents, before, during, or after processing or storage.
A metallic element that has the atomic symbol Sb, atomic number 51, and atomic weight 121.75. It is used as a metal alloy and as medicinal and poisonous salts. It is toxic and an irritant to the skin and the mucous membranes.
A general class of integral membrane proteins that transport ions across a membrane against an electrochemical gradient.
Efflux pumps that use the energy of ATP hydrolysis to pump arsenite across a membrane. They are primarily found in prokaryotic organisms, where they play a role in protection against excess intracellular levels of arsenite ions.
Substances or energies, for example heat or light, which when introduced into the air, water, or land threaten life or health of individuals or ECOSYSTEMS.
The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)
Metals with high specific gravity, typically larger than 5. They have complex spectra, form colored salts and double salts, have a low electrode potential, are mainly amphoteric, yield weak bases and weak acids, and are oxidizing or reducing agents (From Grant & Hackh's Chemical Dictionary, 5th ed)
Carcinogenic substances that are found in the environment.
A subgroup of aquaporins that transport WATER; GLYCEROL; and other small solutes across CELL MEMBRANES.
A filament-like structure consisting of a shaft which projects to the surface of the SKIN from a root which is softer than the shaft and lodges in the cavity of a HAIR FOLLICLE. It is found on most surfaces of the body.
Addition of methyl groups. In histo-chemistry methylation is used to esterify carboxyl groups and remove sulfate groups by treating tissue sections with hot methanol in the presence of hydrochloric acid. (From Stedman, 25th ed)
Waste products which threaten life, health, or the environment when improperly treated, stored, transported, disposed of, or otherwise managed.
An agency in the Executive Branch of the Federal Government. It was created as an independent regulatory agency responsible for the implementation of federal laws designed to protect the environment. Its mission is to protect human health and the ENVIRONMENT.
Sites where HAZARDOUS SUBSTANCES are deposited. Some have facilities for safely storing, processing, and recycling these waste products.
A form of pneumoconiosis resulting from inhalation of dust containing crystalline form of SILICON DIOXIDE, usually in the form of quartz. Amorphous silica is relatively nontoxic.
Inorganic compounds that contain nitrogen as an integral part of the molecule.
An interactive process whereby members of a community are concerned for the equality and rights of all.
The exposure to potentially harmful chemical, physical, or biological agents that occurs as a result of one's occupation.
A diffuse parenchymal lung disease caused by inhalation of dust and by tissue reaction to their presence. These inorganic, organic, particulate, or vaporized matters usually are inhaled by workers in their occupational environment, leading to the various forms (ASBESTOSIS; BYSSINOSIS; and others). Similar air pollution can also have deleterious effects on the general population.
A form of pneumoconiosis caused by inhalation of asbestos fibers which elicit potent inflammatory responses in the parenchyma of the lung. The disease is characterized by interstitial fibrosis of the lung, varying from scattered sites to extensive scarring of the alveolar interstitium.
One of the Liliaceae used as a spice (SPICES) and traditional remedy. It contains alliin lyase and alliin, which is converted by alliin lyase to allicin, the pungent ingredient responsible for the aroma of fresh cut garlic.
Any of the monobasic inorganic or organic acids of sulfur with the general formula RSO(OH). (From McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)

Arsenic targets tubulins to induce apoptosis in myeloid leukemia cells. (1/1444)

Arsenic exhibits a differential toxicity to cancer cells. At a high concentration (>5 microM), As2O3 causes acute necrosis in various cell lines. At a lower concentration (0.5-5 microm), it induces myeloid cell maturation and an arrest in metaphase, leading to apoptosis. As2O3-treated cells have features found with both tubulin-assembling enhancers (Taxol) and inhibitors (colchicine). Prior treatment of monomeric tubulin with As2O3 markedly inhibits GTP-induced polymerization and microtubule formation in vitro but does not destabilize GTP-induced tubulin polymers. Cross-inhibition experiments indicate that As2O3 is a noncompetitive inhibitor of GTP binding to tubulin. These observations correlate with the three-dimensional structure of beta-tubulin and suggest that the cross-linking of two vicinal cysteine residues (Cys-12 and Cys-213) by trivalent arsenic inactivates the GTP binding site. Furthermore, exogenous GTP can prevent As2O3-induced mitotic arrest.  (+info)

High concentrations of heavy metals in neighborhoods near ore smelters in northern Mexico. (2/1444)

In developing countries, rapid industrialization without environmental controls has resulted in heavy metal contamination of communities. We hypothesized that residential neighborhoods located near ore industries in three northern Mexican cities would be heavily polluted with multiple contaminants (arsenic, cadmium, and lead) and that these sites would be point sources for the heavy metals. To evaluate these hypotheses, we obtained samples of roadside surface dust from residential neighborhoods within 2 m of metal smelters [Torreon (n = 19)] and Chihuahua (n = 19)] and a metal refinery [Monterrey (n = 23)]. Heavy metal concentrations in dust were mapped with respect to distance from the industrial sites. Correlation between dust metal concentration and distance was estimated with least-squares regression using log-transformed data. Median dust arsenic, cadmium, and lead concentrations were 32, 10, and 277 microg/g, respectively, in Chihuahua; 42, 2, and 467 microg/g, respectively, in Monterrey, and 113, 112, and 2,448 microg/g, respectively, in Torreon. Dust concentrations of all heavy metals were significantly higher around the active smelter in Torreon, where more than 90% of samples exceeded Superfund cleanup goals. At all sites, dust concentrations were inversely related to distance from the industrial source, implicating these industries as the likely source of the contamination. We concluded that residential neighborhoods around metal smelting and refining sites in these three cities are contaminated by heavy metals at concentrations likely to pose a health threat to people living nearby. Evaluations of human exposure near these sites should be conducted. Because multiple heavy metal pollutants may exist near smelter sites, researchers should avoid attributing toxicity to one heavy metal unless others have been measured and shown not to coexist.  (+info)

Retinoic acid and arsenic synergize to eradicate leukemic cells in a mouse model of acute promyelocytic leukemia. (3/1444)

In acute promyelocytic leukemia (APL) patients, retinoic acid (RA) triggers differentiation while arsenic trioxide (arsenic) induces both a partial differentiation and apoptosis. Although their mechanisms of action are believed to be distinct, these two drugs both induce the catabolism of the oncogenic promyelocytic leukemia (PML)/RARalpha fusion protein. While APL cell lines resistant to one agent are sensitive to the other, the benefit of combining RA and arsenic in cell culture is controversial, and thus far, no data are available in patients. Using syngenic grafts of leukemic blasts from PML/RARalpha transgenic mice as a model for APL, we demonstrate that arsenic induces apoptosis and modest differentiation, and prolongs mouse survival. Furthermore, combining arsenic with RA accelerates tumor regression through enhanced differentiation and apoptosis. Although RA or arsenic alone only prolongs survival two- to threefold, associating the two drugs leads to tumor clearance after a 9-mo relapse-free period. These studies establishing RA/arsenic synergy in vivo prompt the use of combined arsenic/RA treatments in APL patients and exemplify how mouse models of human leukemia can be used to design or optimize therapies.  (+info)

Interference in the quantitation of methylated arsenic species in human urine. (4/1444)

The aim of this paper is to report on the presence of chemical interferences in the quantitation of methylated arsenic species in human urine when using a method based on selective volatile arsine species generation, chromatographic separation, and hydride generation atomic absorption spectrometry (HGAAS) detection. An abnormal profile of methylated arsenic species characterized by the absence of the peak corresponding to dimethylarsinic acid (DMA) was observed in urine from some individuals exposed to arsenic via drinking water and living in rural communities of northwestern Argentina. The absence of this peak persisted even after the addition of known amounts of DMA to the samples. However, the DMA peak appeared after urine digestion with hydrochloric acid (2M). Samples showing interferences were provided by individuals who had mate consumption and coca-leaf chewing habits. Because the relative proportions of methylated arsenic species present in urine have been used to evaluate the efficiency of the methylation process, interferences in the formation or detection of methylarsines may cause underestimation of As exposure and also lead to erroneous conclusions about relative biomethylation efficiencies. Therefore, we recommend that urine samples should be digested with 2M HCl before performing speciation analysis using HGAA techniques. Further studies on the impact of this type of interferences on other arsenic speciation methods are also required.  (+info)

Drinking water arsenic in Utah: A cohort mortality study. (5/1444)

The association of drinking water arsenic and mortality outcome was investigated in a cohort of residents from Millard County, Utah. Median drinking water arsenic concentrations for selected study towns ranged from 14 to 166 ppb and were from public and private samples collected and analyzed under the auspices of the State of Utah Department of Environmental Quality, Division of Drinking Water. Cohort members were assembled using historical documents of the Church of Jesus Christ of Latter-day Saints. Standard mortality ratios (SMRs) were calculated. Using residence history and median drinking water arsenic concentration, a matrix for cumulative arsenic exposure was created. Without regard to specific exposure levels, statistically significant findings include increased mortality from hypertensive heart disease [SMR = 2.20; 95% confidence interval (CI), 1.36-3.36], nephritis and nephrosis (SMR = 1.72; CI, 1.13-2.50), and prostate cancer (SMR = 1.45; CI, 1.07-1. 91) among cohort males. Among cohort females, statistically significant increased mortality was found for hypertensive heart disease (SMR = 1.73; CI, 1.11-2.58) and for the category of all other heart disease, which includes pulmonary heart disease, pericarditis, and other diseases of the pericardium (SMR = 1.43; CI, 1.11-1.80). SMR analysis by low, medium, and high arsenic exposure groups hinted at a dose relationship for prostate cancer. Although the SMRs by exposure category were elevated for hypertensive heart disease for both males and females, the increases were not sequential from low to high groups. Because the relationship between health effects and exposure to drinking water arsenic is not well established in U.S. populations, further evaluation of effects in low-exposure populations is warranted.  (+info)

Mutational spectrum of p53 gene in arsenic-related skin cancers from the blackfoot disease endemic area of Taiwan. (6/1444)

To understand the role of p53 tumour suppressor gene in the carcinogenesis of arsenic-related skin cancers from the blackfoot disease endemic area of Taiwan, we collected tumour samples from 23 patients with Bowen's disease, seven patients with basal cell carcinomas (BCC) and nine patients with squamous cell carcinomas (SCC). The result showed that p53 gene mutations were found in 39% of cases with Bowen's disease (9/23), 28.6% of cases with BCC (2/7) and 55.6% of cases with SCC (5/9). Most of the mutation sites were located on exon 5 and exon 8. Moreover, the results from direct sequencing indicated that missense mutations were found at codon 149 (C-->T) in one case, codon 175 (G-->A) in three cases, codon 273 (G-->C) in three cases, codon 292 (T-->A) in one case, codon 283 (G-->T) in one case, codon 172 (T-->C) in one case and codon 284 (C-->A) in one case. In addition, silent mutations were also found in four cases. These mutations were located at codons 174, 253, 289 and 298 respectively. In immunohistochemistry analysis, p53 overexpression was found in 43.5% (10/23) of cases with Bowen's disease, 14% (1/7) of cases with BCC and 44% (4/9) of cases with SSC. These findings showed that p53 gene mutation rate in arsenic-related skin cancers from the blackfoot disease endemic area of Taiwan is high and that the mutation types are different from those in UV-induced skin cancers.  (+info)

The enigma of arsenic carcinogenesis: role of metabolism. (7/1444)

Inorganic arsenic is considered a high-priority hazard, particularly because of its potential to be a human carcinogen. In exposed human populations, arsenic is associated with tumors of the lung, skin, bladder, and liver. While it is known to be a human carcinogen, carcinogenesis in laboratory animals by this metalloid has never been convincingly demonstrated. Therefore, no animal models exist for studying molecular mechanisms of arsenic carcinogenesis. The apparent human sensitivity, combined with our incomplete understanding about mechanisms of carcinogenic action, create important public health concerns and challenges in risk assessment, which could be met by understanding the role of metabolism in arsenic toxicity and carcinogenesis. This symposium summary covers three critical major areas involving arsenic metabolism: its biodiversity, the role of arsenic metabolism in molecular mechanisms of carcinogenesis, and the impact of arsenic metabolism on human risk assessment. In mammals, arsenic is metabolized to mono- and dimethylated species by methyltransferase enzymes in reactions that require S-adenosyl-methionine (SAM) as the methyl donating cofactor. A remarkable species diversity in arsenic methyltransferase activity may account for the wide variability in sensitivity of humans and animals to arsenic toxicity. Arsenic interferes with DNA methyltransferases, resulting in inactivation of tumor suppressor genes through DNA hypermethylation. Other studies suggest that arsenic-induced malignant transformation is linked to DNA hypomethylation subsequent to depletion of SAM, which results in aberrant gene activation, including oncogenes. Urinary profiles of arsenic metabolites may be a valuable tool for assessing human susceptibility to arsenic carcinogenesis. While controversial, the idea that unique arsenic metabolic properties may explain the apparent non-linear threshold response for arsenic carcinogenesis in humans. In order to address these outstanding issues, further efforts are required to identify an appropriate animal model to elucidate carcinogenic mechanisms of action, and to define dose-response relationships.  (+info)

Arsenic: health effects, mechanisms of actions, and research issues. (8/1444)

A meeting on the health effects of arsenic (As), its modes of action, and areas in need of future research was held in Hunt Valley, Maryland, on 22-24 September 1997. Exposure to As in drinking water has been associated with the development of skin and internal cancers and noncarcinogenic effects such as diabetes, peripheral neuropathy, and cardiovascular diseases. There is little data on specific mechanism(s) of action for As, but a great deal of information on possible modes of action. Although arsenite [As(III)] can inhibit more than 200 enzymes, events underlying the induction of the noncarcinogenic effects of As are not understood. With respect to carcinogenicity, As can affect DNA repair, methylation of DNA, and increase radical formation and activation of the protooncogene c-myc, but none of these potential pathways have widespread acceptance as the principal etiologic event. In addition, there are no accepted models for the study of As-induced carcinogenesis. At the final meeting session we considered research needs. Among the most important areas cited were a) As metabolism and its interaction with cellular constituents; b) possible bioaccumulation of As; c) interactions with other metals; d) effects of As on genetic material; e) development of animal models and cell systems to study effects of As; and f) a better characterization of human exposures as related to health risks. Some of the barriers to the advancement of As research included an apparent lack of interest in the United States on As research; lack of relevant animal models; difficulty with adoption of uniform methodologies; lack of accepted biomarkers; and the need for a central storage repository for stored specimens.  (+info)

TY - JOUR. T1 - Dietary B vitamin intakes and urinary total arsenic concentration in the Health Effects of Arsenic Longitudinal Study (HEALS) cohort, Bangladesh. AU - Argos, Maria. AU - Rathouz, Paul J.. AU - Pierce, Brandon L.. AU - Kalra, Tara. AU - Parvez, Faruque. AU - Slavkovich, Vesna. AU - Ahmed, Alauddin. AU - Chen, Yu. AU - Ahsan, Habibul. PY - 2010/12. Y1 - 2010/12. N2 - Purpose: The objective of this analysis was to evaluate the effects of dietary B vitamin intakes on creatinine-adjusted urinary total arsenic concentration among individuals participating in the Health Effects of Arsenic Longitudinal Study (HEALS) cohort in Araihazar, Bangladesh. Arsenic exposure is a major public health problem in Bangladesh, where nearly 77 million people have been chronically exposed to arsenic through the consumption of naturally contaminated groundwater. Dietary factors influencing the metabolism of ingested arsenic may potentially be important modifiers of the health effects of arsenic in this ...
The Binational Arsenic Exposure Survey (BAsES) was designed to evaluate probable arsenic exposures in selected areas of southern Arizona and northern Mexico, two regions with known elevated levels of arsenic in groundwater reserves. This paper describes the methodology of BAsES and the relationship between estimated arsenic intake from beverages and arsenic output in urine. Households from eight communities were selected for their varying groundwater arsenic concentrations in Arizona, USA and Sonora, Mexico. Adults responded to questionnaires and provided dietary information. A first morning urine void and water from all household drinking sources were collected. Associations between urinary arsenic concentration (total, organic, inorganic) and estimated level of arsenic consumed from water and other beverages were evaluated through crude associations and by random effects models. Median estimated total arsenic intake from beverages among participants from Arizona communities ranged from 1.7 to 14.1 µg
Gilbert-Diamond, Diane ; Cottingham, Kathryn L ; Gruber, Joann F ; Punshon, Tracy ; Sayarath, Vicki ; Gandolfi, A Jay ; Baker, Emily R ; Jackson, Brian P ; Folt, Carol L ; Karagas, Margaret ...
Emerging data indicate that rice consumption may lead to potentially harmful arsenic exposure. However, few human data are available, and virtually none exist for vulnerable periods such as pregnancy. Here we document a positive association between rice consumption and urinary arsenic excretion, a biomarker of recent arsenic exposure, in 229 pregnant women. At a 6-mo prenatal visit, we collected a urine sample and 3-d dietary record for water, fish/seafood, and rice. We also tested womens home tap water for arsenic, which we combined with tap water consumption to estimate arsenic exposure through water. Women who reported rice intake (n = 73) consumed a median of 28.3 g/d, which is ∼0.5 cup of cooked rice each day. In general linear models adjusted for age and urinary dilution, both rice consumption (g, dry mass/d) and arsenic exposure through water (μg/d) were significantly associated with natural log-transformed total urinary arsenic ( ...
Background In the Ganges Delta, chronic arsenic poisoning is a health concern affecting millions of people who rely on groundwater as their potable water source. The prevalence of anemia is also high in this region, particularly among women. Moreover, arsenic is known to affect heme synthesis and erythrocytes and the risk of arsenic-induced skin lesions appears to differ by sex. Methods We conducted a case-control study in 147 arsenic-exposed Bangladeshi women to assess the association between anemia and arsenic-induced skin lesions. Results We observed that the odds of arsenic-related skin lesions were approximately three times higher among women who were anemic (hemoglobin , 120 g/L) compared to women with normal hemoglobin levels [Odds Ratio (OR) = 3.32, 95 % Confidence Intervals (CI): 1.29, 8.52] after adjusting for arsenic levels in drinking water and other covariates. Furthermore, 75 % of the women with anemia had adequate iron stores (serum ferritin ≥12 μg/L), suggesting that the ...
What is arsenic and where do you find it?. Arsenic is a naturally occurring element that is widely distributed in the earths crust. Arsenic can exist in several oxidation states with other elements as inorganic or organic arsenic. It is a silvery-gray, semimetallic substance that tarnishes in air. Inorganic and organic arsenic compounds are white in color, and have no smell or special taste. Inorganic arsenic occurs naturally in certain types of soils and rock formations. Inorganic arsenic compounds are mainly used as a preservative in pressure-treated wood to make it resistant to rotting and decay. Organic arsenic compounds are used to make insect killers, weed killers, and fungicides.. Who is exposed to arsenic?. Anyone can be exposed to arsenic since low levels of arsenic are present in soil, water, food, and air. People are primarily exposed to arsenic through eating food (fish and shellfish), drinking water, or breathing air containing arsenic. If wells are drilled in areas where naturally ...
To date, we have analyzed 29668 hand tubewell water samples from 1721 villages / wards in 250 GPs/ Municipal area from all 26 blocks of the district (Table I). Figure I shows the groundwater arsenic situation in each block of Murshidabad with Pie-diagram distribution. We observed arsenic concentration above 10 µg/L in 15953 (53.8%) hand tubewells and in 7911 (26.7%) above 50 µg/L and 1337 (4.5%) of the tubewells had arsenic concentrations above 300µg/L. In Murshidabad the number of villagers where we found arsenic concentration above 10, 50 and 300 µg/L are 1320, 971 and 281 respectively; and 25, 24 and 17 blocks were found to be contaminated with arsenic levels above 10, 50 and 300 µg/L. Arsenic level above 1000µg/L was found in 71 tubewells; the maximum arsenic contamination level found in this district is 3003µg/L in the Nawda and Raghunathganj I blocks. ...
TY - CHAP. T1 - Arsenic methylation capability and human health. AU - Hsueh, Yu Mei. AU - Huang, Yung Kai. AU - Chung, Chi Jung. PY - 2011/1/1. Y1 - 2011/1/1. N2 - The metabolism of inorganic arsenic takes place through a series of reactions, including reduction and oxidative methylation reactions. Biomethylation is considered a major detoxification pathway for inorganic arsenic. However, interspecies differences exist according to the efficiency with which inorganic arsenic is metabolized and excreted in urine. Intermediate trivalent methylated arsenic species are more cytotoxic and genotoxic than inorganic compounds. The arsenic methylation profile is influenced by demographic characteristics, lifestyle, diet and genetic susceptibility. Inefficient methylation is related to the risk of cancer and noncancer disease.. AB - The metabolism of inorganic arsenic takes place through a series of reactions, including reduction and oxidative methylation reactions. Biomethylation is considered a major ...
TY - BOOK. T1 - Arsenic Exposure and Health Effects IV. T2 - Arsenic exposure, null genotypes of glutathione s-transferase m1, t1 and p1, and risk of carotid atherosclerosis among residents in the Lanyang Basin of Taiwan. AU - Chappell, W.R.. AU - Abernathy, C.O.. AU - Calderon, R.L.. AU - Chiou, Hung-Yi. AU - Wang, I.H.. AU - Hsueh, Yu-Mei. AU - Chiou, S. T.. AU - Chou, Yi Li. AU - Teh, Hee-Wen. AU - Chen, Chien Jen. PY - 2001. Y1 - 2001. N2 - This collected volume of authoritative articles represents the state-of-the-art in arsenic research. Arsenic experts from around the world, participants in the Fourth International Conference on Arsenic Exposure and Health Effects organized by the Society of Environmental Geochemistry and Health in 2000, present their critical findings.A vital contribution to arsenic study and policy making, this volume examines the global impact of the toxin and discusses arsenic in the environment, mechanisms of arsenic metabolism and carcinogenesis, water treatment ...
To date, we have analyzed 8334 hand tubewell water samples from 1374 villages/Para/wards in 79 GPs/ Municipal area from 17 blocks of this district. Table I shows the distribution of arsenic in tubewell water from South 24 Parganas district. Figure I shows the groundwater arsenic contamination status in 17 blocks of South 24 Parganas with Pie-diagram distribution. Table I shows that arsenic concentration above 10 µg/L in 3500 (42%) hand tubewells and in 2359 (28.3%) above 50 µg/Land 547 (6.6%) had arsenic concentrations above 300µg/L. From the above analysis, it appears that groundwater in 12 block contains arsenic above WHO guideline value of arsenic in drinking water (10 µg/L) and 11 blocks exceeds Indian standard value for As in drinking water (50 µg/L). Arsenic level above 1000µg/L was found in 30 tubewells; the maximum arsenic contamination level found in this district is 3700µg/L in the Baruipur block. In blocks Diamond Harbour, Gosaba, Joynagar II and Thakurpukur all the tubewells ...
Inorganic arsenic is a human carcinogen that can target the liver, but its carcinogenic mechanisms are still unknown. Global DNA hypomethylation occurs during arsenic-induced malignant transformation in rodent liver cells. DNA hypomethylation can increase gene expression, particularly when occurring in the promoter region CpG sites, and may be a non-genotoxic mechanism of carcinogenesis. Thus, in the present study liver samples of male mice exposed to 0 (control) or 45 p.p.m. arsenic (as NaAsO2) in the drinking water for 48 weeks were analyzed for gene expression and DNA methylation. Chronic arsenic exposure caused hepatic steatosis, a lesion also linked to consumption of methyl-deficient diets. Microarray analysis of liver samples showed arsenic induced aberrant gene expression including steroid-related genes, cytokines, apoptosis-related genes and cell cycle-related genes. In particular, the expression of the estrogen receptor-α (ER-α), and cyclin D1 genes were markedly increased. RT-PCR and ...
Arsenic is carcinogenic, possibly partly through epigenetic mechanisms. We evaluated the effects of arsenic exposure and metabolism on DNA methylation. Arsenic exposure and methylation efficiency in 202 women in the Argentinean Andes were assessed from concentrations of arsenic metabolites in urine (inorgani
The German Federal Institute for Risk Assessment (BfR) is recommending that methods to minimise the levels of inorganic arsenic in rice products should be investigated in the light of recent dietary exposure studies in the German population.. Analyses of rice and rice products in Germany have shown that many contain relatively high concentrations of carcinogenic inorganic arsenic. Some products, such as rice cakes, were found to contain more inorganic arsenic than rice grains, but the reason for this is not known.. The BfR has calculated the intake of toxic inorganic arsenic compounds through the consumption of rice and rice products in Germany and concludes that they could make a significant contribution to the overall intake, especially in children. Because inorganic arsenic compounds are classified as carcinogenic for humans, foodstuffs should only contain as little as reasonably achievable, says BfR President Professor Dr Dr Andreas Hensel.. The Institute is advising food manufacturers to ...
Posted on Jul 7, 2013 , 1 comment. By The Editors Despite the high toxicity of arsenic, there are arsenical drugs - in other words, there are drugs that contain arsenic. One of these drugs, roxarsone, is used in chicken feeds to kill intestinal parasites, promote growth (make the chicken grow faster) and improve pigmentation (make meat look pinker). Roxarsone contains organic arsenic, which is much less toxic than inorganic arsenic. However, mounting evidence suggests organic arsenic can change into inorganic arsenic once administered to chickens. The U.S. Environmental Protection Agency (EPA) classifies inorganic arsenic as a known human carcinogen - This classification is based on extensive population studies of lung cancers that developed following arsenic exposure through inhalation, and skin cancers that developed following ingestion of contaminated drinking water in adults. According to the EPA, arsenic exposure also may be associated with a higher incidence of bladder, liver, kidney, and ...
Studies into arsenic in food have been restricted by a lack of speciation data. Of more than 100,000 arsenic concentrations submitted to EFSA for evaluation, some 98% were reported as total arsenic but only a few broke figures down into organic and inorganic. European authorities have adopted EFSAs 2009 report and maximum limits for inorganic arsenic are planned to be introduced for rice and rice-based infant food. The introduction of maximum limits for cereals, algae and food supplements is also under discussion.. In the US the Food and Drug Administration has been measuring total arsenic concentrations in food products since 1991, but has yet to establish a specific standard. A guideline for arsenic (total) in crustacean and molluscs of 76ppm and 86 ppm respectively, was introduced in 1993, but it is currently examining the risks associated with longterm exposure.. CODEX has a standard for total arsenic in various foods (fats, margarine, olive oil, vegetable oil, mineral water and salt), but ...
Arsenic contamination takes serious turn in Narail. NARAIL June 12 : Arsenic contamination has taken a serious turn in all the three upazilas of the district in recent times, reports BSS. The number of arsenic affected people is increasing in Narail district day by day. Kalia upazila is a severely arsenic affected area in district. About 85 per cent tube-wells in the area are marked with red paint to warn the people that the waters of these tube-wells are contaminated by arsenic, Md Ahsan Habib, Upazila Nirbahi Officer, Kalia said.. In Kalia upazila the waters of 11,304 tube-wells have been tested, of which contamination of arsenic beyond permissible level has been detected in 8,507 tube- wells.In Lohagora upazila, waters of 1,023 tube-wells have been tested, of which contamination of arsenic has been detected in 696 tube-wells. In Narail Sadar upazila the waters of 1,269 tube-wells have been tested and of which contamination of arsenic has been detected in 499 tube-wells.. At least 55 persons ...
Beyond Pesticides, September 20, 2012) Raising questions about the adequacy of pesticide regulation, historically and ongoing, Consumer Reports published a new study yesterday that finds worrisome levels of inorganic arsenic in rice products. Arsenic is a known human carcinogen. This new report follows its earlier one that finds high levels of arsenic in apple and grape juice. The report finds elevated arsenic levels across organic and conventional products, raising serious questions about widespread environmental and soil contamination from past and continuing arsenical pesticide use. Although organic arsenic occurs naturally in the environment, it is synthetic inorganic arsenic that poses the biggest health hazards to humans and animals. So, humans are exposed to two kinds of the carcinogen in air, water, soil, and food sources. But unlike organic arsenic, which is found naturally in the environment, inorganic arsenic is present in our food as a result of pesticide application and animal ...
In June 2011, AdEdge Water Technologies was contacted by Sunrise Engineering to design, manufacture, and start up an arsenic removal system for the Spring Creek Utilities Company located in Elko, Nevada. The existing water system consisted of three wells feeding into a centralized distribution system with a maximum capacity of 1950 GPM and serves a population of 1500 residents. The AdEdge treatment system consists of five WaterPOD containerized units each housing an ADGS+ coagulation/filtration arsenic removal system. All five WaterPODs are integrated with an existing chlorine module to oxidize arsenic (III) to arsenic (V) for optimal removal. The units also integrate with an AdEdge ADIN chemical feed module which injects ferric chloride in the raw water to supplement the iron concentration to aid in arsenic removal. A CO2 pH adjustment module is furnished in each WaterPOD to reduce the pH from 7.89 to a neutral pH of 7. AdEdge also provided an H2Zero backwash recycle system that reclaims 100% ...
Silver Spring, MD (TFC) - An approved animal drug known as 3-Nitro® (roxarsone) was added to chicken feed prior to July 2011. This drug was known to contain an organic form of arsenic, which is known to be toxic, but indeed it is less toxic than inorganic arsenic. In 2011, the Food and Drug Administration admitted that roxarsone contained inorganic arsenic, which is a much more toxic compound. After discovering this, the FDAs Center for Veterinary Medicine and the Center for Food Safety and Applied Nutrition developed a new analytical method used to detect minute levels of arsenic in animal tissue.. It is important to note that organic arsenic is in the environment as a naturally occurring substance and can also be a contaminant in water, air, soil and various food products. In this case, the cause for concern is the organic arsenic found in 3-Nitro® that could transform into inorganic arsenic found in the chicken feed at high levels.. The FDA made a statement in the Product Safety ...
Arsenic biochemistry refers to biochemical processes that can use arsenic or its compounds, such as arsenate. Arsenic is a moderately abundant element in Earths crust, and although many arsenic compounds are often considered highly toxic to most life, a wide variety of organoarsenic compounds are produced biologically and various organic and inorganic arsenic compounds are metabolized by numerous organisms. This pattern is general for other related elements, including selenium, which can exhibit both beneficial and deleterious effects. Arsenic biochemistry has become topical since many toxic arsenic compounds are found in some aquifers, potentially affecting many millions of people via biochemical processes. The evidence that arsenic may be a beneficial nutrient at trace levels below the background to which living organisms are normally exposed has been reviewed. Some organoarsenic compounds found in nature are arsenobetaine and arsenocholine, both being found in many marine organisms. Some ...
TY - JOUR. T1 - Urinary excretion of arsenic following rice consumption. AU - Meharg, A. A.. AU - Williams, P. N.. AU - Deacon, C. M.. AU - Norton, Gareth John. AU - Hossain, Mohammed Kamal. AU - Louhing, D.. AU - Marwa, Ernest Melkiory. AU - Lawgalwi, Y.. AU - Taggart, Mark Antony. AU - Cascio, Claudia. AU - Haris, P.. PY - 2014/11. Y1 - 2014/11. N2 - Patterns of arsenic excretion were followed in a cohort (n = 6) eating a defined rice diet, 300 g per day d.wt. where arsenic speciation was characterized in cooked rice, following a period of abstinence from rice, and other high arsenic containing foods. A control group who did not consume rice were also monitored. The rice consumed in the study contained inorganic arsenic and dimethylarsinic acid (DMA) at a ratio of 1:1, yet the urine speciation was dominated by DMA (90%). At steady state (rice consumption/urinary excretion) ∼40% of rice derived arsenic was excreted via urine. By monitoring of each urine pass throughout the day it was observed ...
ARSENIC TREATMENT The 1998 European Drinking Water Directive includes an arsenic standard of 10 ?g/l, reduced from 50 ?g/l in the 1980 Directive. Learn more about ARSENIC TREATMENT on GlobalSpec.
Arsenic is found in multiple forms, some of which are more toxic to humans than others. In Alaska, most arsenic in groundwater is likely derived from inorganic arsenic that occurs naturally in the Earths crust, most commonly as the mineral arsenopyrite. When arsenopyrite oxidizes into its elemental components (similar to the way iron rusts) and those components enter the groundwater system, the resulting arsenic, as pentavalent arsenic [As(V) or arsenate] and trivalent arsenic [As(III) or arsenite], is toxic to humans. Arsenite is both more harmful and more mobile in groundwater than arsenate. Soils in some parts of Alaska have high concentrations of inorganic arsenic, which can leach into groundwater and render private well water unsafe for consumption. Arsenic in surface water, however, tends to bind with iron oxide and organic material, making it less mobile, and therefore, less likely to reach drinking water sources. Arsenic also accumulates in food crops grown in arsenic-rich soil or ...
treatment with 400 micrograms a day of folic acid, the U.S. recommended dietary allowance, reduced total blood arsenic levels in the study population by 14 percent...Folic acid supplementation enhanced the detoxification of arsenic to a form that is more readily excreted in urine, said Mary Gamble...Folic acid increased the methylation or detoxification of arsenic in the body, allowing the body to change some of its more toxic metabolite, or methylarsonic (MMA) acid, to a form that could more easily be excreted from the body, thus lowering the levels of arsenic found in the blood... ...
2000, describes a method for removing arsenic from fly ash, in which arsenic is recovered as scorodite. The first treatment stage of the arsenic-containing material is the oxidation of trivalent arsenic (As(lll)) into pentavalent arsenic (As(V)) with a gas containing sulphur dioxide and oxygen in oxidising conditions, in which arsenic does not precipitate. After this, arsenic is precipitated in atmospheric conditions, in which the Fe(III)/As(V) mole ratio is specified as 1. Precipitation is carried out either in one or several stages, but precipitation as scorodite demands the over-saturation of the solution, which is achieved by recycling scorodite crystals to the first precipitation reactors and simultaneously neutralising the suspension. A beneficial pH range is around 1-2 and this is maintained by feeding a suitable neutralising agent into the precipitation stage. In these conditions, arsenic can be precipitated to the level of 0.5 g/l. The final arsenic removal to a level below 0.1 mg/l is ...
Millions now suffer the effects of chronic arseniasis related to environmental arsenic exposure. The biological mechanisms responsible for arsenic-induced toxicity and especially chronic effects, including cancer, are not well known. The U.S. Armed Forces Institute of Pathology (AFIP) is participati …
Arsenic (As) is an ubiquitous chemical element that occurs in nature in the form of organic and inorganic compounds, and its harmful effects are well known and described. It is well known that inorganic arsenic (III and V) compounds are more toxic than organic compounds. Also the bioavailability of arsenic from different chemical compounds varies. Organic forms of arsenic, which are most commonly found in fish and seafood, undergo little biotransformation after consumption and are excreted from the body in virtually unchanged form. On the other hand, inorganic arsenic compounds are well absorbed and metabolized. Adverse effects of inorganic arsenic Long-term exposure to arsenic derived from inorganic compounds results in an increased risk of developing various types of cancer, including skin, bladder, lung, kidney, liver and prostate cancer. In addition, exposure to inorganic arsenic is accompanied by disorders of gastrointestinal, cardiovascular, blood, respiratory, neurological, immune, ...
Commonly found arsenic species in human urine are AsIII (arsenite), AsV (arsenate), MMA (monomethyl arsenic acid), DMA (dimethylarsinic acid) and AB (arsenobetaine). Evidence has shown that these species vary in toxicity and have the potential to be used as biomarkers for human exposure. For human exposure assessments in areas that have naturally occurring arsenic contaminated sources, or those who live or work near contaminated environmental sites where arsenic has been used, it is important to fully understand what species of arsenic residents are being exposed to in order to grasp the risk of arsenic exposure. Since it is difficult to determine direct human exposures, a swine model was used as a surrogate. Urine samples from these studies were analyzed using high-performance liquid chromatography and inductively coupled plasma mass spectrometry (LCICPMS) to quantitate arsenic species. There was a range of 64-74% DMA determined in swine urine samples for all test soils where a range of 60-75% ...
Researchers at the Lawrence Berkeley National Laboratory have invented ARUBA (Arsenic Removal Using Bottom Ash) a material that effectively and affordably removes high concentrations of arsenic from contaminated groundwater. The technology is cost-effective because the substrate?bottom ash from coal fired power plants?is a waste material readily available in South Asia. During fieldwork in four sub-districts ofBangladesh, ARUBA reduced groundwater arsenic concentrations as high as 680 ppb to below the Bangladesh standard of 50 ppb. Key results from three trips in Bangladesh and one trip to Cambodia include (1) ARUBA removes more than half of the arsenic from contaminated water within the first five minutes of contact, andcontinues removing arsenic for 2-3 days; (2) ARUBA?s arsenic removal efficiency can be improved through fractionated dosing (adding a given amount of ARUBA in fractions versus all at once); (3) allowing water to first stand for two to three days followed by treatment with ARUBA produced
According to recent reports, millions of people across the globe are suffering from arsenic (As) toxicity. Arsenic is present in different oxidative states in the environment and enters in the food chain through soil and water. In the agricultural field, irrigation with arsenic contaminated water, that is, having a higher level of arsenic contamination on the top soil, which may affects the quality of crop production. The major crop like rice (Oryza sativa L.) requires a considerable amount of water to complete its lifecycle. Rice plants potentially accumulate arsenic, particularly inorganic arsenic (iAs) from the field, in different body parts including grains. Different transporters have been reported in assisting the accumulation of arsenic in plant cells; for example, arsenate (AsV) is absorbed with the help of phosphate transporters, and arsenite (AsIII) through nodulin 26-like intrinsic protein (NIP) by the silicon transport pathway and plasma membrane intrinsic protein aquaporins. Researchers and
Inorganic arsenic is used for hardening copper and lead alloys. It also is used in glass manufacturing as a decolorizing and refining agent, as a component of electrical devices, in the semiconductor industry, and as a catalyst in the production of ethylene oxide. Arsenic compounds are used as a mordant in the textile industry, for preserving hides, as medicinals, pesticides, pigments, and wood preservatives. Approximately 90% of the domestic consumption of arsenic is currently used with production of chromated copper arsenate (CCA), a wood preservative, the production of which is currently being phased out. Arsenic is also found naturally in the environment and is typically present in soil and water at detectable levels. Sources of human exposure to inorganic arsenic include drinking water, diet, air, and soils (which can contain naturally occurring arsenic or contamination from anthropogenic sources). This draft IRIS health assessment addresses only cancer human health effects that may result ...
Downloadable (with restrictions)! We exploit recent molecular genetics evidence on the genetic basis of arsenic excretion and unique information on family links among respondents living in different environments from a large panel survey within a theoretical framework incorporating optimizing behavior to uncover the hidden costs of arsenic poisoning in Bangladesh. We provide for the first time estimates of the effects of the ingestion and retention of inorganic arsenic on direct measures of cognitive and physical capabilities as well as on the schooling attainment, occupational structure, entrepreneurship and incomes of the rural Bangladesh population. We also provide new estimates of the effects of the consumption of foods grown and cooked in arsenic-contaminated water on individual arsenic concentrations. The estimates are based on arsenic biomarkers obtained from a sample of members of rural households in Bangladesh who are participants in a long-term panel survey following respondents and their
The WHO recommended value of arsenic contamination in water is 0.01 mg/l, while the maximum permissible limit for Bangladesh and India has been fixed at 0.05 mg/l. In the DCH-SOES survey, less than 0.01 mg/l arsenic concentration was detected in 46% or 2803 out of 6101 water samples while above the WHO recommended value (0.01 mg/l) was found in the rest 54% or 3298 samples. On the other hand, arsenic concentration at less than the permissible limit (0.05 mg/l) was detected in 62% or 3783 samples, while above the limit was found in the rest 38% or 2318 water samples. Arsenic contamination at higher level than the WHO recommended value was found in the tube-wells of 52 districts out of the 60 surveyed. Of these, the level of arsenic presence exceeds the maximum permissible limit in the tube-wells water of 41 districts. In 11 districts, the level of arsenic concentration was found more than the WHO recommended value, but less than the maximum permissible limit. That means, highest 0.05 mg/l exist ...
In mammals, methylation occurs in the liver by methyltransferases, the products being the (CH3)2AsOH (dimethylarsinous acid) and (CH3)2As(O)OH (dimethylarsinic acid), which have the oxidation states As(III) and As(V), respectively.[2] Although the mechanism of methylation of arsenic in humans has not been elucidated, the source of methyl is methionine, which suggests a role of S-adenosyl methionine.[25] Exposure to toxic doses begin when the livers methylation capacity is exceeded or inhibited. There are two major forms of arsenic that can enter the body, arsenic (III) and arsenic (V).[26] Arsenic (III) enters the cells though aquaporins 7 and 9, which is a type of aquaglyceroporin.[26] Arsenic (V) compounds use phosphate transporters to enter cells.[26] The arsenic (V) can be converted to arsenic (III) by the enzyme purine nucleoside phosphorylase.[26] This is classified as a bioactivation step, as although arsenic (III) is more toxic, it is more readily methylated.[27]. There are two routes ...
The arsenic speciation and arsenic removal in chitosan packed column were studied. Arsenic removal experiments were carried out with an arsenic standard solution (1.0 mg/l) and drilled well water samples from Limon Mine Community at different pH, water flowrate, and volume of adsorbent material. The simulation of arsenic speciation was carried out at a pH range from 0 to 12, a temperature of 25ºC, a pE equal to 4, and a total arsenic concentration of 1.34 x 10-5 mol kg-1. According to speciation calculations arsenic is found mainly in oxidized form in the conditions of Limon Mines drilled well waters, dihydrogen arsenate ion (H2AsO4-), and hydrogen arsenate ion (HAsO42-) being the major species. The experiments showed that arsenic adsorption depends mainly on the pH as well as the activity of functional groups that compose the chitosan structure. At pH 3 and volume of adsorbent material of 337.8 cm3 an adsorption of 94% was obtained from arsenic standard solution, and the arsenic present in ...
Background Chronic arsenic exposure is definitely associated with an increased risk of skin, bladder and lung cancers. were analyzed using random effects Tobit regression to account for repeated measures and 8-OHdG values below the detection buy 849773-63-3 limit. buy 849773-63-3 Results A consistent negative effect for APE1 was observed across water, toenail and urinary arsenic models. APE1 148 glu/glu + asp/glu genotype was connected with a reduction in logged 8-OHdG of 0.40 (95%CI -0.73, -0.07) in comparison to APE1 148 asp/asp. A link between total urinary arsenic and 8-OHdG was noticed among ladies using the GSTM1 null genotype however, not in ladies with GSTM1 positive. Among ladies with GSTM1 null, an evaluation of the next, third, and 4th quartiles of total urinary arsenic towards the 1st quartile led to a 0.84 boost (95% CI 0.27, 1.42), a 0.98 boost (95% CI 033, 1.66) and a 0.85 boost (95% CI 0.27, 1.44) in logged 8-OHdG, respectively. Zero effects between 8-OHdG and toenail taking in ...
Arsenic toxicity is species-dependent for mammals and is transformed to other metabolites in various organs. In order to understand its metabolism, in-vitro simulation experiments were set up for various organ tissues. As(V) was transformed to As(III), while DMA(V) was changed to DMAS in sheep rumen, but the suspected MA-V) was not formed. This is different for the incubation of seaweed in rumen fluid, which points to a different unknown source for MA(V). In another study, dog MDCK kidney cells showed that inorganic arsenicals were methylated in kidney cells while the exposed DMAS was only oxidized to DMA(V) in kidney cells, and the exposed DMA(V) rarely transformed. The toxicities of arsenicals in dog kidney cells is dependant upon the uptake rates and the transformation of arsenicals. DMAS was as toxic as the inorganic arsenic species and an order to magnitude more toxic than the oxo-species. Methylated arsenic species can accumulate in hair and wool and can be used as a biomarker for arsenic ...
The guideline value for inorganic arsenic in drinking water was reduced from 50 μg/L to 10 μg/L by the World Health Organization (WHO) in 1993. Nonetheless, many countries, particularly developing countries, still use the 50 μg/L value as standard for arsenic partially because of lack of adequate analytical instruments for lower arsenic concentrations in water.. Elevated concentrations of arsenic in drinking water (above 50 μg/L) have been reported in several countries, including Argentina, Chile, China, Mongolia, Taiwan, Nepal, Japan, Mexico, Poland, Vietnam, and the USA. Local-scale problems of arsenic contamination of groundwater have been reported by some countries, and new cases are continually discovered - groundwater contaminated by arsenic can be found all over the world.. To date, the globally worst-affected areas are located in Bangladesh and West Bengal (India), where arsenic in groundwater has been documented at concentrations up to 3,200 μg/L. Moreover, in some districts of ...
Arsenic concentrations in domestic well-water throughout large regions of Minnesota exceed the public drinking-water standard set by the U.S. Environmental Protection Agency. The frequency of arsenic contamination in domestic wells is a serious and widespread public-health concern; long-term exposure to arsenic is toxic to humans, even at extremely low concentrations. Although the Minnesota well code now requires that each new potable water-supply well be tested for arsenic, the information can come only after the well has been drilled. Although homeowners can purchase arsenic-removal systems, they are expensive, require maintenance, and do not provide alarms for high arsenic concentrations or system failure. It would be preferable if wells could be placed where the risk of arsenic contamination of groundwater is known to be low. This article summarizes the authors collaboration with the U.S. Geological Survey, the Minnesota Geological Survey, and the Minnesota Department of Natural Resources to ...
Arsenic contamination takes serious turn in Chandpur. CHANDPUR, June 25: Arsenic contamination has taken a serious turn in Chandpur district recently.. This was disclosed by Md. Sadeq Hossain, Executive Engineer of the local Public Health Engineering Department, in an exclusive talk with this correspondent recently.. About 1.25 lakh shallow tube-wells of all the eight upazilas of the district have already been sealed as the waters of those contain arsenic beyond permissible limits which are very much harmful to human body, he added. He disclosed that on an average 98 per cent shallow tube-wells of the district are arsenic contaminated.. A survey shows that 96 per cent tube-wells in Hajiganj, 98 per cent tube-wells in Faridganj, Shahrasti and Kochua, 85 per cent tube-wells in Haimchar and 80 per cent tube-wells in Matlab Sadar and newly created Matlab North upazilas are arsenic contaminated.. It is officially learnt that at present 5,000 people, mostly old men, women and children have been ...
epigenetic alteration behindenhanced mitochondrial biogenesis in chronic arsenic exposure. An extensive case-control study was conducted with 390 study participants (unexposed, exposed without skin lesion, exposed with skin lesion and exposed skin tumour) from highly arsenic exposed areas ofWest Bengal, India. Methylation specific PCRrevealed significant promoter hypomethylation oftwo key biogenesis regulatory genes, PGC1αandTfam in arsenic exposed individuals and also in skin tumour tissues. Linear regression analysis indicated significant negative correlation between urinary arsenic concentration and promoter methylation status. Increased expression of biogenesis regulatory genes wasobtained by quantitative real-time PCR analysis. Moreover, altered mitochondrial fusion-fission regulatory gene expression was also observed in skin tumour tissues. miR663, having tumour suppressor gene like function was known to be epigenetically regulated through mitochondrial retrograde signal. Promoter ...
Concomitant exposures to arsenic and polycyclic aromatic hydrocarbons (PAHs) such as benzo[a]pyrene (BaP) are widespread. While BaP acts by binding to and inducing mutations in critical sites on DNA, the mechanism(s) of arsenic carcinogenesis remains unknown. Data from epidemiological studies of arsenic copper smelter workers and arsenic ingestion in drinking water suggest a positive interaction f
Digging of tube wells to provide drinking water in Bangladesh has had the side-effect of exposing people to arsenic which contaminates groundwater in the country. This project investigates (i) how arsenic concentrations that result from the ingestion of arsenic affect the capabilities and productivity of the rural Bangladesh population and (ii) how changes in food consumption, by affecting arsenic ingestion and excretion, affect arsenic concentrations. ...
Ingestion of arsenic is relatively common in the setting of homicide and is occasionally used in deliberate self-poisoning. Arsine gas and CCA exposure are not uncommon industrial exposures. Most organs can be involved and the diagnosis may not be obvious. \\ \\ Arsenic is a classic poison; implicated in the deaths of Tchaikovsky and Napoleon. It has also been used as a therapeutic substance since ancient times. It has been used in traditional Chinese medicines and most recently as a chemotherapeutic agent for the treatment of acute promyelocytic leukaemia. Chronic arsenic poisoning is a major public health crisis and an environmental disaster in Bangladesh and West Bengal, due to the contamination of ground water that affects millions of people. These chronic problems are beyond the scope of this course. \\ \\ Arsenic exists in many forms: arsine gas, elemental arsenic, inorganic oxides and organic arsenic. Acute arsenic poisoning is rare. The elemental form of arsenic is non-toxic but the ...
Compounds of arsenic were recognized as highly toxic long before arsenic was even recognized as an element in 1649 (by Schroeder, a German pharmacist). Nero used arsenic to poison Britannicus in 55 AD to secure the Roman throne. In 17th century France, white arsenic (As2O3) was known as poudre de succession (inheritance powder). Today, approximately 90 percent of all arsenic used in the US is used as a wood preservative. Arsenic is also used in electronics (gallium arsenide) and continues to be used in agricultural chemicals (pesticides, insecticides, herbicides, algaecides, fungicides and growth stimulants for plants and animals). Arsenic, being an element, is never destroyed once released into the environment. It will be with us forever.. Arsenic consumption is linked to a number of adverse health effects including skin, bladder and lung cancer. Oxygenated compounds of arsenic (arsenates: As+5 and arsenites: As+3) are soluble in water and, when ingested, mimic phosphates in the body. They can ...
Arsenic. Agency for Toxic Substances and Disease Registry website. Available at: http://www.atsdr.cdc.gov/substances/toxsubstance.asp?toxid=3. Accessed January 29, 2021. Arsenic and drinking water from private wells. Centers for Disease Control and Prevention website. Available at: http://www.cdc.gov/healthywater/drinking/private/wells/disease/arsenic.html. Accessed January 29, 2021. Arsenic-ToxFAQs. Agency for Toxic Substances and Disease Registry website. Available at: http://www.atsdr.cdc.gov/toxfaqs/tfacts2.pdf. Accessed January 29, 2021. Acute arsenic poisoning. EBSCO DynaMed website. Available at: http://www.dynamed.com/topics/dmp~AN~T114977/Chronic-arsenic-poisoning . Accessed January 29, 2021. Chen Y, Graziano JH, Parvez F, et al. Arsenic exposure from drinking water and mortality from cardiovascular disease in Bangladesh: prospective cohort study. BMJ. 2011;342:d2431. Chronic arsenic poisoning. EBSCO DynaMed website. Available at: ...
Quilicura is a municipality located in the Santiago Metropolitan Region in Chile. Well #3 has a flow of 1600 gallons per minute (100 liters per second). The well has a high concentration of arsenic that fluctuates between 0.040 mg/L and 0.060 mg/L, well above the World Health Organization standard of 0.010 mg/L. In addition to the high arsenic concentration, the site has challenges with pH that ranges from 7.0 to 9.5. AdEdge was contacted by EcoRiles in 2013 to design, manufacture, and commission an arsenic removal solution for the Quilicura municipalty.The AdEdge arsenic treatment solution consists of four WaterPOD containerized systems rated for a combined total of 1600 gpm (100 lps). Each WaterPOD contains six 48-inch carbon steel vessels in a parallel configuration. The vessels are loaded with AdEdge Bayoxide E33 granular ferric oxide media. The E33 binds the arsenic to the media structure and does not lose that bond during backwash. The system has an ADIN chemical feed dosing system that is ...
Exposure to arsenic has been linked to a variety of adverse human health effects, including skin lesions; skin, lung, and bladder cancer; vascular diseases; low birth weight; and potentially diabetes mellitus and increased susceptibility to infection [1-3]. Although human exposure to the more toxic, inorganic forms of arsenic is thought to occur primarily through drinking water [3, 4], elevated concentrations of arsenic in certain foods may pose an additional risk to consumers (e.g., [2]). Foods with particularly high total arsenic concentrations include fish and seafood [5-9]; cereals and cereal products, particularly rice and rice-based products [5-7, 10, 11]; and bran and germ [2]. Using diet data and physiological models to estimate total arsenic exposure, Xue et al. [12] found that fruits and fruit juices, vegetables, and beer and wine also can be important sources of dietary arsenic; more recent studies document high arsenic concentrations in cruciferous vegetables in particular [13]. ...
In 2013 FSANZ released a survey on the levels of inorganic arsenic in a range of seaweed types and products containing seaweed, available in Australia.. The levels in most seaweed tested were below the regulatory limit for inorganic arsenic, with the exception of one hijiki seaweed sample. Because this sample was made up of two individual samples of the same brand of hijiki it may not be representative of all hijiki seaweed available for sale in Australia. Hijiki seaweed is also tested at the border for inorganic arsenic and compliance rates are high.. The New Zealand Ministry for Primary Industries (MPI) has also conducted tests on levels of arsenic in imported hijiki products and found some levels exceeding the regulatory limit for inorganic arsenic.. Using the information collected on the levels of inorganic arsenic in seaweed, dietary exposure to inorganic arsenic was estimated for the Australian population. Using the median inorganic arsenic concentrations in seaweed, the contribution of ...
Background: Dietary factors such as folate, vitamin B12, protein, and methionine are important for the excretion of arsenic via one-carbon metabolism in undernourished populations exposed to high levels of arsenic via drinking water. However, the effects of dietary factors on toenail arsenic concentrations in well-nourished populations exposed to relatively low levels of water arsenic are unknown. Methods: As part of a population-based case-control study of skin and bladder cancer from the USA, we evaluated relationships between consumption of dietary factors and arsenic concentrations in toenail clippings. Consumption of each dietary factor was determined from a validated food frequency questionnaire. We used general linear models to examine the associations between toenail arsenic and each dietary factor, taking into account potentially confounding effects.
The relation of mining and smelting exposure to arsenic and lung cancer was studied among tin miners in Yunnan Province in the Peoples Republic of China. Interviews were conducted in 1985 with 107 living tin miners who had lung cancer and an equal number of age matched controls from among tin miners without lung cancer to obtain information on risk factors for lung cancer including detailed history of employment and tobacco use. Occupational history was combined with industrial hygiene data to estimate cumulative arsenic exposure. Similar methods were also used to estimate radon exposure for simultaneous evaluation in this analysis. The results indicate that subjects in the highest quarter of cumulative arsenic exposure have a relative risk of 22.6 compared with subjects without exposure after adjusting for tobacco and radon exposure, and a positive dose response relation was observed. Simultaneous evaluation of arsenic and tobacco exposure indicates a greater risk for arsenic, whereas ...
The influence of ethylenediaminetetraacetic acid (EDTA) and chemical species on arsenic accumulation in aquatic floating macrophyte Spirodela polyrhiza L. (duckweed) was investigated. The uptake of inorganic arsenic species (arsenate; As(V) and arsenite; As(III)) into the plant tissue and their adsorption on iron plaque of plant surfaces were significantly (p,0.05) higher than those of organic species (monomethylarsonic acid (MMAA) and dimethylarsinic acid (DMAA)). The addition of EDTA to the culture media increased the uptake of As(V) and As(III) into the plant tissue though the MMAA and DMAA uptake were not affected. About 46% of the inorganic arsenic species were desorbed or mobilized from iron plaque by EDTA. Desorption of organic arsenic species was not affected by EDTA addition because the co-precipitation occurs only with inorganic species. Phosphate uptake was not affected by EDTA though its concentration in citrate-bicarbonate-EDTA (CBE)-extract was much higher than that of plant ...
Arsenic exposure through drinking water is an established lung carcinogen. Evidence on non-malignant lung outcomes is less conclusive and suggests arsenic is associated with lower lung function. Studies examining low-moderate arsenic (| 50 μg/L), the level relevant for most populations, are limited. We evaluated the association of arsenic exposure with respiratory health in American Indians from the Northern Plains, the Southern Plains and the Southwest United States, communities with environmental exposure to inorganic arsenic through drinking water. The Strong Heart Study is a prospective study of American Indian adults. This analysis used urinary arsenic measurements at baseline (1989-1991) and spirometry at Visit 2 (1993-1995) from 2132 participants to evaluate associations of arsenic exposure with airflow obstruction, restrictive pattern, self-reported respiratory disease, and symptoms. Airflow obstruction was present in 21.5% and restrictive pattern was present in 14.4%. The odds ratio (95%
Groundwater samples, taken from 73 wells in 10 counties of southeast Michigan in 1997 had arsenic concentrations in the range of 0.5 to 278 μg/l, the average being 29 μg/l. About 12% of these wells had arsenic concentrations that exceeded the current USEPAs maximum contaminant level of 50 μg/l. Most (53-98%) of the arsenic detected was arsenite [As(III)] and other observations supported the arsenic species distribution (low redox potential and DO). In shallow groundwater (15 m), the concentration of arsenic is possibly controlled by reductive dissolution of arsenic-rich iron hydroxide/oxyhydroxide and dissolution of arsenic sulfide minerals....
Banks and Salt found that the protein encoded by this gene ends up in the membrane of the plant cells vacuole. Salt said the protein acts as a pump, moving arsenic into the cells equivalent of a trashcan.. It stores it away from the cytoplasm so that it cant have an effect on the plant, Salt said.. Banks said understanding how the Pteris vittata functions with arsenic could lead to ways to clean up arsenic-contaminated land.. Potentially you could take these genes and put them in any organism that could suck the arsenic out of the soil, Banks said.. Salt said rice plants could be modified with the gene to store arsenic in the roots of plants - instead of rice grains - in contaminated paddies.. Banks and Salt found another gene in Pteris vittata that looks almost exactly the same as the one that controls arsenic tolerance. When the fern was exposed to arsenic, the confirmed arsenic-tolerance gene increased its expression while the similar gene did not.. Salt said the gene that regulates ...
Background|br /|Arsenic is present in numerous ecosystems and microorganisms have developed various mechanisms to live in such hostile environments. Herminiimonas arsenicoxydans, a bacterium isolated from arsenic contaminated sludge, has acquired remarkable capabilities to cope with arsenic. In particular our previous studies have suggested the existence of a temporal induction of arsenite oxidase, a key enzyme in arsenic metabolism, in the presence of As(III).|br /|Results|br /|Microarrays were designed to compare gene transcription profiles under a temporal As(III) exposure. Transcriptome kinetic analysis demonstrated the existence of two phases in arsenic response. The expression of approximatively 14% of the whole genome was significantly affected by an As(III) early stress and 4% by an As(III) late exposure. The early response was characterized by arsenic resistance, oxidative stress, chaperone synthesis and sulfur metabolism. The late response was characterized by arsenic metabolism and associated
Effective and affordable arsenic removal from drinking water has become a significant issue recently. The United States Environmental Protection Agency (EPA) has promulgated a new maximum contaminant level (MCL) for arsenic in drinking water which will take effect in January 2004. The current arsenic MCL of 50 micrograms per liter (ugll) was set by the United sates Public Health Service in 1943 and has not been reduced in nearly 60 years. Arsenic has been linked to various types of cancers, prompting EPA to change the standard. Due to the fact many water systems, especially small water utilities serving less than 10,000 people, will be impacted by a reduced standard much research is currently being done to fmd treatment technologies affordable enough for small water systems to implement and maintain. Many small water utilities lack the financial and technical resources required to construct and maintain centrally located water treatment facilities capable of removing arsenic. For this reason, many small
Bioaccessibility tests and mineralogical analyses were performed on arsenic-contaminated tailings and soils from gold mine districts of Nova Scotia, Canada, to examine the links between soil composition, mineralogy, and arsenic bioaccessibility. Arsenic bioaccessibility ranges from 0.1% to 49%. A weak correlation was observed between total and bioaccessible arsenic concentrations, and the arsenic bioaccessibility was not correlated with other elements. Bulk X-ray absorption near-edge structure analysis shows arsenic in these near-surface samples is mainly in the pentavalent form, indicating that most of the arsenopyrite (As1−) originally present in the tailings and soils has been oxidized during weathering reactions. Detailed mineralogical analyses of individual samples have identified up to seven arsenic species, the relative proportions of which appear to affect arsenic bioaccessibility. The highest arsenic bioaccessibility (up to 49%) is associated with the presence of calcium−iron ...
TY - JOUR. T1 - Groundwater arsenic contamination and associated health risks in Bihar, India. AU - Singh, S. K.. AU - Ghosh, A. K.. AU - Kumar, A.. AU - Kislay, K.. AU - Kumar, C.. AU - Tiwari, R. R.. AU - Parwez, R.. AU - Kumar, N.. AU - Imam, M. D.. PY - 2014/3/7. Y1 - 2014/3/7. N2 - The extent of groundwater arsenic (As) contamination and associated health-risks were studied in the four villages: Chaukia and Terahrasiya (Vaishali); Mamalkha and Masharu (Bhagalpur) in Bihar, India. Groundwater samples were tested using the standard Silverdiethyledithiocarbamate method at 520nm by Thermo UV-1 spectrophotometer. The As levels in both the districts exceeded the WHO standard of 10μg/L for drinking water with a maximum value of 20μg/L in Vaishali and 143μg/L in Bhagalpur. However, the FAO standard of 100μg/L of As for irrigation water was only exceeded in Bhagalpur. The calculated range of the hazard index (HI) for Vaishali was 0.9 to 10, and for Bhagalpur was 10.40 to 40.47. Both ranges ...
It is reported by the wall street journal that in the recent study conducted it is found that 100 broiler chickens have inorganic arsenic at huge levels in the livers. These chickens were treated with 3-Nitro of Pfizer. Thus, the sale and of 3-Nitro was stopped in July and another treatment was suggested for the chickens.. The products with high arsenic were called back from all the stores in US and FDA assets that the chicken consists of arsenic at the safer level and is not dangerous for health anymore.. The production industry of meat wants to hide the truth about the adverse impact of arsenic on the human health. The combination of arsenic, lead and mercury are highly toxic effect on children and fetuses. This fact is backed by the study conducted by the University of South Carolina Department of Environmental Health Services.. The toxic level of arsenic is very high and considered as 4 times more toxic than mercury. The Journal of the American Medical Association has published a study which ...
The technique was evaluated for decomposing biological st … Curatola CJ, Grunder FI, Moffitt AE Jr. A modified hydride generation, atomic absorption spectrophotometric (AAS) method for the analysis of total arsenic in hair has been developed to evaluate occupational exposures to arsenic. Hydride Generation Atomic Absorption Spectrometry is divided into two parts, with the theoretical background and experimental approach covered in Part I. Hydride Generation AAS nptelhrd Loading... Atomic Absorption Spectroscopy/Atomic Absorption Spectrometry/AAS - Duration: … selenium determination by hydride generation atomic absorption spectrophotometry (HG-AAS) in full blood, blood plasma and serum, the liver, skeletal muscle tissue, the myocardium, and the kidneys after wet mineralization of samples in a closed nitric acid and hydrogen peroxide system Electrochemical hydride generation (EcHG) as a sample introduction system for determination of zinc was developed. Change to nitrous oxide/acetylene flame. ...
Until recently, chicken producers would routinely supplement poultry feed with a growth-promoting arsenical drug called roxarsone, which also treats intestinal parasites in the birds and gives their meat an appealing pink color. A study in this issue of EHP shows that inorganic arsenic (iAs) accumulates in the breast meat of broiler chickens, potentially as a result of treatment with roxarsone. In 2011 the U.S. Food and Drug Administration (FDA) found that the livers of roxarsone-treated chickens had elevated levels of iAs, a known human carcinogen. In response, roxarsones manufacturer, Pfizer, voluntarily pulled the drug off the U.S. market, although it is still sold overseas, and a similar arsenical drug is still available in the United States. Sampling for the new study took place between December 2010 and June 2011, before Pfizer withdrew roxarsone from the U.S. market. Roxarsone is an organic form of arsenic, which although less toxic to humans than the inorganic species implicated in cancer, has
Intake of certain dietary fats decreases toenail arsenic levels. However, the presence of long chain n-3 fatty acids in the diet corresponds with higher arsenic concentration in toenails.
Theres good news today for parents who give their kids apple juice: The U.S. Food and Drug Administration has announced new draft guidelines that call for no more than 10 parts per billion of inorganic arsenic in apple juice - roughly the same level allowed in tap water.. Although some apple juices have tested high for arsenic, all 95 samples tested by the FDA already fell within the 10 ppb - reassurance that when it comes to arsenic levels, apple juice is safe.. The most important message is we are confident in the safety of our juice supply, said FDA Commissioner Dr. Margaret Hamburg.. Pressure to develop the guidelines stemmed from a 2011 report on the Dr. Oz Show and arsenic testing by Consumer Reports, both of which raised questions about the safety of apple juice.. Arsenic and Apple Juice: New Testing Finds Low Levels In response, the FDA undertook additional testing and commissioned a risk assessment study to determine an arsenic limit based on the amount of juice a child might drink ...
Search Indian Sodium Arsenate Manufacturers and Suppliers Details - Contact to Sodium Arsenate Exporters in India, Sodium Arsenate Wholesalers, Sodium Arsenate Distributors and Traders from India.
Groundwater in Eastern Croatia contains elevated concentrations of inorganic arsenic. The biggest well field in the area has an average arsenic concentration of 200 μg/L and it supplies the population of around 200,000 people with drinking water. Croatian Regulation has adopted guidelines from the European Council Directive for the maximum concentration limit (MCL) of 10 μg/L of As in drinking water. However, it has been estimated that almost 120,000 people drink water from that well field with a concentration of arsenic over 10 μg/L. To reduce the health risks associated with arseniccontaminated water intake in Eastern Croatia it is important to develop proper strategies that will use one of the following technologies for arsenic removal: oxidation, coagulation-flocculation, adsorption, ion exchange or membrane technologies ...
This summary is derived from an article in Food Production Daily, April 13, 2006 http://www.foodproductiondaily.com and other identified sources (UPC editor). The Institute for Agriculture and Trade Policy (IATP) reports that arsenic in chicken meat appears closely linked to the decades-old industry practice of putting arsenic into chicken feed to speed the birds growth artificially. At least 70 percent of US broiler chickens have been fed arsenic, according to IATP estimates. Minneapolis, Minnesota-based IATP tested 155 samples from raw supermarket chicken products and found that 55 percent carried detectable arsenic. Arsenic was more than twice as prevalent in conventional brands of supermarket chicken as in certified organic and other premium brands. All 90 fast food chicken products tested by IATP also contained detectable arsenic. Chicken products were purchased from supermarkets and fast food outlets in Minnesota and California and analyzed for arsenic by a private, independent ...
A process is provided for separation of at least one metal sulfide from a mixed sulfide concentrate. The process may comprise: subjecting the mixed sulfide concentrate to flotation in which at least one sulfide comprising antimony, arsenic and a first metal is floated and at least one sulfide comprising a second metal is depressed. The flotation yields a first metal concentrate having the at least one sulfide comprising antimony, arsenic and the first metal and a second metal concentrate having the at least one sulfide comprising the second metal. The first metal concentrate is leached to yield a further concentrate and a leach solution. The further concentrate comprises the first metal and the leach solution comprises soluble antimony and soluble arsenic. The process may further comprise oxidizing the leach solution to yield an antimony precipitate and an arsenic solution, and forming a stable arsenic compound from the arsenic solution.
Stock Photo 4128R-18191: Download Arsenic trioxide, molecular model. Precursor to arsenic compounds, including organoarsenic compounds. Atoms are represented as spheres and are colour_coded: arsenic violet and oxygen red. Stock Photos. Search over 12 million royalty free images and rights managed stock photography
Arsenic in marine oils is mainly present in the form of lipid-soluble compounds; collectively called arsenolipids. Although total arsenic concentrations in marine oils typically range from 0.2 to 16 mg kg-1 [1-3], knowledge regarding the chemical structures and distribution of arsenolipids in oils is limited. The present work describes the development of analytical methods for the determination of arsenolipids, and their application to marine oil, including fish oil and oil of liver of Northeast Arctic cod (Gadus morhua).. In the present work gas chromatography coupled to inductively coupled plasma mass spectrometry (GC-ICP-MS) was applied for analysing arsenic-containing hydrocarbons (AsHCs) in fish oil. The AsHCs were extracted into aqueous methanol, and further subjected to solid-phase extraction (SPE) prior to analysis. Reversedphase HPLC-ICP-MS was applied as an analytical technique for analysis of both AsHCs and arsenic-containing fatty acids (AsFAs) in methanol phase of marine oil. The ...
Problem: Until the early 2000s, most of the pressure-treated wood used in the United States for outdoor structures such as playground equipment, picnic tables, benches and decks was treated with the preservative, Chromated Copper Arsenate (CCA). This chemical was the primary preservative used in the pressure-treating process to protect wood against weather, mold and insects. Studies show that CCA-treated wood is continually leaching (releasing) arsenic to the surface of the wood. Arsenic is known to cause cancer in humans: it is a potent skin, bladder and lung carcinogen. Arsenic is also linked to liver and kidney cancer, immune system suppression, increased risk of high blood pressure, cardiovascular disease, endocrine disruption (altering normal hormone levels or activity in the body) and diabetes. Studies have confirmed that high levels of arsenic can be released onto childrens hands by direct contact with arsenic-treated wood. Young children, in particular, are at risk of ingesting ...
Looking for online definition of Arsenic hydride in the Medical Dictionary? Arsenic hydride explanation free. What is Arsenic hydride? Meaning of Arsenic hydride medical term. What does Arsenic hydride mean?
Arsenobetaine, arsenocholine, monomethylarsonic acid, dimethylarsinic acid, arsenous (III) acid, arsenic (V) acid. The concentration of speciated arsenics is determined by using high performance liquid chromatography (HPLC) to separate the species coupled to an ICP-DRC-MS to detect the arsenic species. This analytical technique is based on separation by anion-exchange chromatography (IC), followed by detection using quadrupole ICP-MS technology, and includes DRC™ technology (Baranov VI et al., 1999), which minimizes or eliminates many argon-based polyatomic interferences (Tanner S et al., 2000) will require 0.5 mL of urine. Arsenic species column separation is largely achieved due to differences in charge-charge interactions of each negatively-charged arsenic component in the mobile phase, with the positively-charged quaternary ammonium groups bound at the columns solid-liquid interface. Upon exit from the column, the chromatographic eluent goes through a nebulizer, where it is converted into ...
Samples of the edible mushroom Laccaria amethystina, which is known to accumulate arsenic, were collected from two uncontaminated beech forests and an arsenic-contaminated one in Denmark. The total arsenic concentration was 23 and 77 mug As g-1 dry weight in the two uncontaminated samples and 1420 mug As g-1 in the contaminated sample. The...
Arsenic has been found in at least 781 of 1,300 National Priorities List sites (hazardous waste sites) identified by the U.S. Environmental Protection Agency. A release from an industrial plant, or from a container, does not always lead to exposure. You can be exposed to a chemical only when you come into contact with it. Exposures occur through breathing, eating, or drinking substances containing the chemical, or from skin contact with it. If you are exposed to arsenic, the appearance of symptoms and their seriousness is dependent upon how much, how long and by what way you were exposed. Your sex, age, lifestyle and state of health also contribute. What is arsenic?. Arsenic is a naturally occurring gray metal-like material found in the environment combined with other elements. Most of these combined compounds are white or colorless powders that do not evaporate. They have no smell, and most have no special taste, so you cannot tell if arsenic is present in your food, water, or air. Arsenic is ...
Arsenic and fluoride are major contaminants of drinking water. Mechanisms of toxicity following individual exposure to arsenic or fluoride are well known. However, it is not explicit how combined exposure to arsenic and fluoride leads to cellular and/or DNA damage. The present study was planned to assess (i) oxidative stress during combined chronic exposure to arsenic and fluoride in drinking water, (ii) correlation of oxidative stress with cellular and DNA damage and (iii) mechanism of cellular damage using IR spectroscopy. Mice were exposed to arsenic and fluoride (50 ppm) either individually or in combination for 28 weeks. Arsenic or fluoride exposure individually led to a significant increase in reactive oxygen species (ROS) generation and associated oxidative stress in blood, liver and brain. Individual exposure to the two toxicants showed significant depletion of blood glutathione (GSH) and glucose 6-phosphate dehydrogenase (G6PD) activity, and single-stranded DNA damage using a comet ...
In the present study, CeO2/Fe2O3 nanocomposite was prepared by co-precipitation method and its application was investigated for arsenic removal from water. Characterization of the nano sized adsorbent particles was carried out using SEM and XRD techniques. Systemic adsorption experiments were performed in batch systems and the optimum conditions were obtained. The effects of pH, contact time, adsorbent mass, temperature, ionic strength and initial concentration of arsenic were investigated on kinetics and equilibrium of the adsorption. Thermodynamic parameters and adsorption kinetics were studied in detailed to know the nature and mechanism of adsorption. Kinetic studies showed that the adsorption process followed pseudo second order kinetic model. The thermodynamic parameters such as ΔG⁰, ΔS⁰ and ΔH⁰ were calculated, and it was found that the reaction was spontaneous and exothermic in nature. Adsorption equilibrium was studied using Langmuir and Freundlich isotherm models. It was observed
Pilot study indicates that dogs eating rice-based dry dog foods could be at risk for chronic arsenic exposure. Rice-consumption is considered a risk factor for chronic arsenic toxicity in humans. A pilot study conducted within the DogRisk research group at the University of Helsinki found that dogs eating rice-based dry dog foods had higher hair arsenic levels than dogs whose diet did not contain rice. The study compared hair arsenic levels from seven dogs that were eating rice-based (having rice as first or second ingredient) dry dog foods and nine dogs whose diet did not contain any rice. All dogs were of the breed Staffordshire bull terrier and had been eating their diets for a minimum of one year prior to the study.. - Considering that dogs often eat the same food daily for long periods of time, sometimes even their whole lives, we need to acknowledge the risk for long-term accumulation of contaminants such as toxic metals. Arsenic is widespread in the environment and accumulates especially ...
D4606 - 15 Standard Test Method for Determination of Arsenic and Selenium in Coal by the Hydride Generation/Atomic Absorption Method , arsenic, atomic absorption, Eschka mixture, hydride generation, selenium ,,
Hundreds of millions of people world-wide are exposed to unacceptable levels of arsenic in drinking water. This is a public health crisis because arsenic is a Group I (proven) human carcinogen. Human cells methylate arsenic to monomethylarsonous acid (MMAIII), monomethylarsonic acid (MMAV), dimethylarsinous acid (DMAIII), and dimethylarsinic acid (DMAV). Although the liver is the predominant site for arsenic methylation, elimination occurs mostly in urine. The protein(s) responsible for transport of arsenic from the liver (into blood), ultimately for urinary elimination are unknown. Human multidrug resistance protein 1 (MRP1/ABCC1) and MRP2 (ABCC2), are established arsenic efflux pumps, but unlike the related MRP4 (ABCC4), are not present at the basolateral membrane of hepatocytes. MRP4 is also found at the apical membrane of renal proximal tubule cells making it an ideal candidate for urinary arsenic elimination. In the current study, human MRP4 expressed in HEK293 cells reduced the ...
Arsenic is one of the most ubiquitous toxins and endangers the health of tens of millions of humans worldwide. It is a mainly a water-borne contaminant. Inorganic trivalent arsenic (AsIII) is one of the major species that exists environmentally. The transport of AsIII has been studied in microbes, plants and mammals. Members of the aquaglyceroporin family have been shown to actively conduct AsIII and its organic metabolite, monomethylarsenite (MAsIII). However, the transport of AsIII and MAsIII in in any fish species has not been characterized. In this study, five members of the aquaglyceroporin family from zebrafish (Danio rerio) were cloned, and their ability to transport water, glycerol, and trivalent arsenicals (AsIII and MAsIII) and antimonite (SbIII) was investigated. Genes for at least seven aquaglyceroporins have been annotated in the zebrafish genome project. Here, five genes which are close homologues to human AQP3, AQP9 and AQP10 were cloned from a zebrafish cDNA preparation. These genes were
Mt Sinai School of Medicine Dr Samuel] Waxman was one of the first Western physicians to see promise in the a series of small studies in Chinese medical journals that reported intravenous doses of arsenic trioxide-induced long-term remission in APL [acute promyelocytic leukemia] patients. The medical uses of arsenic reach back at least 2,000 years, but it was political ideology that prompted its modern resurgence, Waxman explained.. Arsenic may never have entered the western pharmacopoeia were it not for the Chinese cultural revolution in the 1960s and 1970s, he said. During that time, Western medicine virtually disappeared in China, and physicians turned to traditional Chinese herbal cures that had sustained the culture for millennia. The Chinese physician Zhang Ting-Dong of Harbin Medical University made the initial breakthrough by formulating a stable, low-dose solution of 1% arsenic trioxide in injectable form. Zhang presented his work at a Chinese medical society meeting in the early 1980s ...
In this study, water stable zirconium metal-organic framework (UiO-66) has been synthesized and for the first time applied as an adsorbent to remove aquatic arsenic contamination. The as-synthesized UiO-66 adsorbent functions excellently across a broad pH range of 1 to 10, and achieves a remarkable arsenate uptake capacity of 303 mg/g at the optimal pH, i.e., pH = 2. To the best of our knowledge, this is the highest arsenate As(V) adsorption capacity ever reported, much higher than that of currently available adsorbents (5-280 mg/g, generally less than 100 mg/g). The superior arsenic uptake performance of UiO-66 adsorbent could be attributed to the highly porous crystalline structure containing zirconium oxide clusters, which provides a large contact area and plenty of active sites in unit space. Two binding sites within the adsorbent framework are proposed for arsenic species, i.e., hydroxyl group and benzenedicarboxylate ligand. At equilibrium, seven equivalent arsenic species can be captured by
Abraham M, McDougald L, Beckstead R. 2013. Blackhead disease: reduced sensitivity of Histomonas meleagridis to nitarsone in vitro and in vivo. Avian Dis 58(1):60-63.. Ahmad SA, Sayed MH, Barua S, Khan MH, Faruquee MH, Jalil A, et al. 2001. Arsenic in drinking water and pregnancy outcomes. Environ Health Perspect 109:629-631.. Alter v. Pfizer Inc. No. CV-2012-67. (Arkansas County Circuit Court, 24 September 2012). http://www.hwnn.com/images/stories/hwnn/​amended_complaint.pdf [accessed 28 October 2015].. Arai Y, Lanzirotti A, Sutton S, Davis JA, Sparks DL. 2003. Arsenic speciation and reactivity in poultry litter. Environ Sci Technol 37(18):4083-4090.. ATSDR (Agency for Toxic Substances and Disease Registry). 2007. Toxicological Profile for Arsenic. Atlanta, GA:ATSDR. http://www.atsdr.cdc.gov/ToxProfiles/tp2​.pdf [accessed 30 July 2015].. Aubrey A. 2013. How trace amounts of arsenic end up in grocery store meat. National Public Radio, The Salt, 16 May. ...
The naturally occurring aqueous Arsenic (As) and other toxic elements are found around the world. The present study concentrates on arsenic concentrations, speciation and related microbial diversity in a hydrothermal system in Western Turkey. The surface temperatures of hot springs reach up to 90°C and deep well (reservoir) temperatures vary in the range of 40 to 230°C. The elements such as As, B, Br, Ba, Cr, Fe, Mn, V and Zn are found in high concentration in hydrothermal waters. Hydrogeochemically, Seferihisar hot spring exhibited a Na-Cl water type. On the other hand, Karahayit, Pamukkale, Emirfaki, Alaşehir and Sart exhibit a Ca-HCO 3 water type and Çitgöl exhibited a Na-HCO 3-SO 4 water type. The arsenic (As) concentrations in geothermal waters of Western Anatolia have been detected to range from 0.03 mg/L to 1.5 mg/L, including Buharkent (İnalti) (1.50 ± 0.005 mg/L), Kizildere (1.13 ± 0.005 mg/L), Eynal (0.71 ± 0.005 mg/L) and Sarayköy (0.06 ± 0.004 mg/L). Arsenic (III) is the ...
Ask the Expert Question-and-Answer Archive by Ron Joseph. February, 2009 Arsenic in Paint. Q. Is it possible to have paint tested for arsenic content? Are there any labs in southern California, for example, that might do this?. A.Wow! Why would anybody use arsenic in paint? Im sure you can have the paint tested, but why do you suspect arsenic ...
Press Release issued Mar 1, 2017: Global Market Study Evaluate on Arsenic Removal Industry by Type, Manufacturers, Application, Type, and Regions, Forecast up to 2022.
Arsenic removal from groundwaters containing iron, ammonium, manganese and phosphate: A case study from a treatment unit in northern ...
The SafeWork Australia (SWA) Hazardous Chemicals Information System (HCIS) Consolidated List of Substances includes arsenic, arsenic acid and its salts, arsenic compounds and arsine and these substances are therefore regulated under Part 4 of the consolidated Victorian Occupational Health and Safety Regulations (2017). Employers must, by law, implement these regulations, which means they must first try to eliminate the hazard or the risks associated with the hazard. If this is not practicable, then the employer must reduce the risk, according to the preferred order of hazard control - that is by beginning at the source.. Where, after taking all practicable measures to control the risk at the source, there is still a risk that workers may be exposed to arsenic, the employer must provide adequate information, training and where necessary, personal protective equipment.. The training employers must provide should include the following: personal hygiene and sanitation; the use of personal protective ...
Arsenic(III), As, monomethylarsonic acid (MMAA), dimethylarsinic acid (DMAA) and arsenobetaine (AsB) were separated by high-performance liquid chromatography (HPLC) and determined on-line by inductively coupled plasma mass spectrometry (ICP-MS). Two forms of HPLC were used: ion pairing and ion exchange, with absolu
Arsenic and cadmium are ranked among the top ten priority hazardous substances by the Agency for Toxic Substances and Disease Registry (ATSDR) [1]. Exposure to arsenic and cadmium can lead to adverse health outcomes such as lung and kidney cancers as well as cardiovascular disease and diabetes [2, 3]. Further, exposure to these two toxic and well-classified chemicals is of particular interest because of their extensive global impact [4-6]. For example, it is estimated that more than 40 million people worldwide drink water containing arsenic at concentrations that exceed the World Health Organization (WHO) and Environmental Protection Agency (EPA) drinking water guideline of 10 ppb [7]. Also, humans are exposed to low levels of cadmium through food consumption, typically ranging between 8 and 25 ug per day [3]. Smoking populations experience higher levels of cadmium exposure, as one cigarette may contain 1-2 ug cadmium [3].. Both arsenic and cadmium are classified as Group 1 carcinogens by the ...
Arsenic is a chemical element that can be found naturally in rock formations and volcanic eruptions, but it also ends up in our soil as a result of arsenic-based pesticides. While these pesticides are now banned in the U.S., theyre still present in our soil and globally, theyre still used. Arsenic can also end up in our water supply, so in 1974, Congress passed the Safe Drinking Water Act to regulate its safety. Today, the maximum contaminant level (MCL) is 0.010 milligrams per Liter (mg/L) or 10 parts per billion (ppb). ...
The liver is considered a major site for methylation of inorganic arsenic (iAs). However, there is Little data on the capacity of human liver to methylate iAs. This work examined the metabolism of arsenite (iAs(III)), arsenate (iAs(v)), methylarsine oxide ((MAsO)-O-III), methylarsonic acid (MAsv), dimethylarsinous acid (DMAsIII), and dimethylarsinic acid (DMAsV) in primary cultures of normal human hepatocytes. Primary rat hepatocytes were used as methylating controls, iAs(III) and (MAsO)-O-III were metabolized more extensively than iAs(v) and MAsv by either cell type. Neither human nor rat hepatocytes metabolized DMAsIII or DMAsV. Methylation of iAs(III) by human hepatocytes yielded methylarsenic (MAs) and dimethylarsenic (DMAs) species; (MAsO)-O-III was converted to DMAs. The total methylation yield (MAs and DMAs) increased over the range of 0.1 to 4 mu M iAs(III). However, DMAs production was inhibited by iAs(III) in a concentration-dependent manner, and the DMAs/MAs ratio decreased. iAs(III) ...
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Centers RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.. ...
Long-term exposure to inorganic arsenic... can lead to chronic arsenic poisoning. Skin lesions and skin cancer are the most ... "2010 Top Six Toxic Threats". Arsenic. Worstpolluted.org. "Arsenic". World Health Organization. June 2016.. ... There are also industrial sources of arsenic, including mining and smelting. "People are exposed to elevated levels of ... inorganic arsenic through drinking contaminated water, using contaminated water in food preparation and irrigation of food ...
Gebel, T. (1997-11-28). "Arsenic and antimony: comparative approach on mechanistic toxicology". Chemico-Biological Interactions ... Diesel exhaust includes ... acetaldehyde; antimony compounds; arsenic; benzene; beryllium compounds; bis(2-ethylhexyl)phthalate ...
While he was able to detect arsenic as yellow arsenic trisulfide, when it came to showing it to the jury it had deteriorated, ... He combined a sample containing arsenic with sulfuric acid and arsenic-free zinc, resulting in arsine gas. The gas was ignited ... So sensitive was the test that it could detect as little as one-fiftieth of a milligram of arsenic. He first described this ... Marsh J. (1836). "Account of a method of separating small quantities of arsenic from substances with which it may be mixed". ...
"Arsenic". History Magazine. "From the Monthly Notices of the Royal Astronomical Society 70, 517-526, 645 (Errata) (1910) By ... 1836 The Marsh test for detecting arsenic poisoning is developed by James Marsh. 1837 Charles Babbage describes an Analytical ...
Arsenic: Arsenic affects numerous organs and systems including- Skin, nervous system, respiratory system, cardiovascular system ... The USS Lead site began as a facility that processed and refined metals and chemicals, including lead and arsenic which are now ... "Arsenic". National Institute of Environmental Health Sciences. "Lead". National Institute of Environmental Health Sciences. "U. ... There are two primary contaminants on the site, those contaminants are lead and arsenic. These contaminants are widespread ...
... arsenic • antimony vitriol • quartz • cinnabar • pyrites • orpiment • galena magnesia • lime • potash • natron • saltpetre • ...
"arsenic". Online Etymology Dictionary. Harper, Douglas. "bromine". Online Etymology Dictionary. Gemoll W, Vretska K (1997). ...
"Lead? Arsenic? Parasites? Many Herbal Supplements Tainted". Fox News. 2015-03-25. Retrieved 2018-10-02. William Obermeyer 2007 ...
"Arsenic". PubChem. "IBUPROFEN - National Library of Medicine HSDB Database". toxnet.nlm.nih.gov. "Formaldehyde SIDS Initial ... "Safety (MSDS) data for arsenic trioxide". ox.ac.uk. Archived from the original on 2010-03-09. "Safety (MSDS) data for metallic ... arsenic". ox.ac.uk. Archived from the original on 2011-01-14. "Safety (MSDS) data for sodium cyanide". ox.ac.uk. Archived from ...
"Arsenic, Inorganic CASRN 7440-38-2 , DTXSID4023886 , IRIS , US EPA, ORD". cfpub.epa.gov. "Arsenic". www.who.int. World Health ... Over the years a lot of concerns have arisen regarding the arsenic and chromium contents of the CCA. In 1986, the U.S. ... Environmental Protection Agency (EPA) has recognized arsenic as a human carcinogen. The water contamination with arsenic and ... Belluck, D. A.; Benjamin, S. L.; Baveye, P.; Sampson, J.; Johnson, B. (March 2003). "Widespread Arsenic Contamination of Soils ...
Many of the buildings on the mine property have been listed as Grade II buildings: the engine house and arsenic calciner on 21 ... The country rock at the mine was killas and the mine's main product was copper, though arsenic and tin were also produced. ... In around 1910 the mine installed a second-hand 85 inch pumping engine, and to help with its production of arsenic, a Brunton ... "Arsenic Calciner". Historic England.co.uk. Retrieved 11 August 2016. "Wheal Busy Chapel, attached walls, gate-piers and ...
Arsenic makes up 100 parts per billion of a typical human by weight. Some arsenic exists in elemental form, but most arsenic is ... realgar has arsenic-arsenic bonds, so the arsenic's oxidation state is +II. A corresponding compound for antimony is Sb2(C6H5)4 ... Arsenic has been shown to be helpful in metabolizing the amino acid arginine. There are 7 mg of arsenic in a typical 70 kg ... Arsenic was historically used as a Paris green pigment, but is not used this way anymore due to its extreme toxicity. Arsenic ...
"Arsenic & Old Lace - Resources - Pagan Student Organizations". Arsenic.com. Archived from the original on July 23, 2008. ...
When arsenic(III) is present, a brown coloration appears forming a dark precipitate of arsenic, according to the following ... As(I) has been observed in arsenic(I) iodide (AsI); see Ellis, Bobby D.; MacDonald, Charles L. B. (2004). "Stabilized Arsenic(I ... One arsenic is reduced from +3 to 0, a three-electron step, hence 3 goes in front of the two tin partners. An alternative three ... One tin is oxidized from oxidation state +2 to +4, a two-electron step, hence 2 is written in front of the two arsenic partners ...
"Arsenic: ACTIONS". Arsenic Théâtre. "République et Canton de Genève - Culture - Cilins". ge.ch. "W. J. T. Mitchell : Que ...
Brimblecombe, P. (1979). "Atmospheric arsenic". Nature. 280 (5718): 104-5. Bibcode:1979Natur.280..104B. doi:10.1038/280104a0. ... Brimblecomb for his study of atmospheric arsenic levels. The critical review in 1982 by Mitchell and Tilson, caused the US EPA ...
5,253 feet (1,601 m) Arsenic Mountain, 47°40′58″N 112°48′59″W / 47.68278°N 112.81639°W / 47.68278; -112.81639 (Arsenic ... "Arsenic Mountain". Geographic Names Information System. United States Geological Survey. "Bennie Hill". Geographic Names ...
"Arsenic Metal". price.metal.com. Shanghai Metals Market. 3 February 2020. Archived from the original on 2020-02-03. "Current ...
Anke M. Arsenic. In: Mertz W. ed., Trace elements in human and Animal Nutrition, 5th ed. Orlando, FL: Academic Press, 1986, 347 ... In: Chappell W.R, Abernathy C.O, Cothern C.R. eds., Arsenic Exposure and Health. Northwood, UK: Science and Technology Letters ... IN: Dietary Reference Intakes for Vitamin A, Vitamin K, Arsenic, Boron, Chromium, Chromium, Iodine, Iron, Manganese, Molybdenum ... Health, 1992, 14:54-56; Uthus E.O., Arsenic essentiality and factors affecting its importance. ...
Arsenic is a metalloid (i.e., an element with some metallic properties) found in and on most naturally occurring substances on ... Arsenic has many applications such as in the production of insecticides, herbicides, pesticides and electronic devices. The ... "Inorganic Arsenic" (PDF). TEACH Chemical Summary. United States Environmental Protection Agency. 2007-08-01. p. 20. Del Razo LM ... "Exposure to arsenic in drinking water is associated with increased prevalence of diabetes: a cross-sectional study in the ...
Arsenic, p. 12; 5.1 "Introduction", p. 21; 5.3 "Results and discussion", p. 22. Archived from the original (PDF) on 15 March ... In the 1970s levels of arsenic and lead found in farms near to the plant were such that crops and livestock were condemned. The ... "Arsenic blamed for lung cancer linked to smelting plant". Yorkshire Post. Johnston Publishing. 17 April 2007. Retrieved 30 July ... By-products of the tin refining process including arsenic caused local pollution, and in the 1980s an additional radioactive ...
The Arsenic Lake Formation is composed of dark green, iron-rich, massive and pillowed tholeiitic basalts. Throughout the ... A pyroxenite dike east of Highway 11 extends roughly to the north-northwest while two others, north of Arsenic Lake, extend to ... Many north-trending shear zones intersect iron-rich tholeiitic basalts of the Arsenic Lake Formation. These zones range in ... Layered chert-magnetite and lesser chert-pyrite-pyrrhotite iron formations are located at the base of the Arsenic Lake ...
... appear after an episode of poisoning with arsenic, thallium or other heavy metals or selenium, and can also appear ... "Chronic arsenic poisoning". Toxicol. Lett. 128 (1-3): 69-72. doi:10.1016/S0378-4274(01)00534-3. PMID 11869818. "Selenium: A ...
A random selection of Prof Seppelt's publications: K. Seppelt (1976). "Arsenic Pentachloride, AsCl5". Angew. Chem. Int. Ed. ...
Since 1993 the department has been responsible for monitoring arsenic in drinking water. The department is responsible for ... "Combating arsenic hazard". The Daily Star. Retrieved 29 April 2018. v t e. ...
... is an inorganic compound of arsenic and iodine. It is a dark red metastable solid. The compound is a ... Hewitt, John Theodore; Winmill, Thomas Field (1907). "LXXXIX.-Arsenic di-iodide". J. Chem. Soc., Trans. 91: 962-964. doi: ...
"Arsenic Trioxide Site". Retrieved December 5, 2009. "Minot Landfill". Retrieved December 5, 2009.. ...
Blicke, F. F.; Smith, F. D. (1929). "Action of Aromatic Grignard Reagents on Arsenic Trioxide". Journal of the American ... Trotter, J. (1962). "Stereochemistry of Arsenic. IV. Chlorodiphenylarsine". Canadian Journal of Chemistry. 40 (8): 1590-1593. ... and di-phenyl arsenic compounds]. Berichte der Deutschen Chemischen Gesellschaft (in German). 11: 1883-1887. doi:10.1002/cber. ... On aromatic arsenic compounds]. Berichte der Deutschen Chemischen Gesellschaft (in German). 8: 1316-1317. doi:10.1002/cber. ...
"Jasimuddin.org". Sos-arsenic.net. Retrieved 10 October 2012. Shrivastava (2008). Broadcast Journalism. Sterling Publishers Pvt ...
Arsenic is described as a metal, or a metal-type, meaning it is not usually found as pure metal. Arsenic can be found in wood ... Arsenic was found in groundwater and surface water at the Price Landfill site. Arsenic is recognized as a carcinogen, meaning ... "Arsenic(Tox Town)". Tox Town. U.S. National Library of Medicine. Retrieved 28 September 2017. "Chemical Profile: Arsenic". ... Chemicals dumped on the site are believed to be 1,2-Dichloroethane, arsenic, benzene, chloroform, lead, and vinyl chloride, all ...
Aqua Tofana Arsenic and Old Lace Arsenic biochemistry Arsenic compounds Arsenic poisoning Arsenic toxicity Arsenic trioxide ... recognizes arsenic and inorganic arsenic compounds as group 1 carcinogens, and the EU lists arsenic trioxide, arsenic pentoxide ... Solid yellow arsenic is produced by rapid cooling of arsenic vapor, As 4. It is rapidly transformed into gray arsenic by light ... Arsenic is classified as a Group-A carcinogen. The three most common arsenic allotropes are gray, yellow, and black arsenic, ...
Exposure to arsenic can also cause cancer. Workers may be harmed from exposure to arsenic. The level of exposure depends upon ... Arsenic can be harmful to the eyes, skin, liver, kidneys, lungs, and lymphatic system. ... Arsenic (As) is a white to gray, brittle solid. It occurs naturally in water and soil. ... NLM TOXNET: Arsenic, Elementalexternal icon. *NTP Report on Carcinogens, Fourteenth Edition: Arsenic and Inorganic Arsenic ...
Arsenic trifluoride is a chemical compound of arsenic and fluorine with the chemical formula AsF3. It is a colorless liquid ... In the gas phase the As-F bond length is 170.6 pm and the F-As-F bond angle 96.2°. Arsenic trifluoride is used as a ... Arsenic trifluoride-antimony pentafluoride, Edwards A. J., Sills R. J. C. J. Chem. Soc. A, 1971, 942 - 945, doi:10.1039/ ... It can be prepared by reacting hydrogen fluoride, HF, with arsenic trioxide: 6HF + As2O3 → 2AsF3 + 3H2O It has a pyramidal ...
Trends in arsenic redox potentials suggest that As2S5 adopts a similar structure, a plausible alternative being an arsenic ... Arsenic pentasulfide is an inorganic compound contains arsenic and sulfur. The identity of this reddish solid remains uncertain ... Arsenic pentasulfide is prepared by precipitation from an acidic solution of soluble As(V) salts by treatment with hydrogen ... Arsenic pentasulfide hydrolyzes in boiling water, giving arsenous acid and sulfur: As2S5 + 6 H2O → 2 H3AsO3 + 2 S + 3 H2S It ...
Arsenic can be in food, soil, and water. Low levels will probably not hurt you, but higher levels can cause problems. Learn ... Arsenic is a natural element found in soil and minerals. Arsenic compounds are used to preserve wood, as pesticides, and in ... Working in a job where arsenic is made or used. Exposure to arsenic can cause many health problems. Being exposed to low levels ... Article: Arsenic Exposure, Arsenic Metabolism, and Glycemia: Results from a Clinical Population... ...
How can arsenic affect my health?. Because arsenic is a natural part of the environment, low levels of arsenic are present in ... Arsenic Arsenic Arsenic has been found in at least 781 of 1,300 National Priorities List sites (hazardous waste sites) ... How does arsenic enter the environment?. It is present in the air as dust from industrial output, burning of arsenic containing ... How might I be exposed to arsenic?. If you live in an area with naturally high levels of arsenic or near a hazardous waste site ...
Arsenic trichloride. Bibliographic information. New Jersey Department of Health, Right to Know Program, CN 368, Trenton, NJ ... arsenic trichloride; USA. Descriptors (secondary). neurotoxic effects; eye injuries; fire fighting; threshold limit values; ...
Arsenic has been found at 1,014 of the 1,598 National Priority List sites identified by the Environmental Protection Agency ( ... At high levels, inorganic arsenic can cause death. Exposure to lower levels for a long time can cause a discoloration of the ... Exposure to higher than average levels of arsenic occurs mostly in the workplace, near hazardous waste sites, or in areas with ... What is arsenic?. Arsenic is a naturally occurring element widely distributed in the earths crust. In the environment, arsenic ...
ARSENIC PENTOXIDE. ICSC. : 0377. Arsenic (V) oxide. Arsenic acid anhydride. Arsenic anhydride. Diarsenic pentoxide. April 2013 ... Decomposes above 300°C . This produces toxic fumes (arsenic trioxide - see ICSC 0378) and oxygen. The solution in water is a ... The recommendations on this Card also apply to inorganic pentavalent arsenic compounds (arsenates). ...
See an archive of all arsenic stories published on the New York Media network, which includes NYMag, The Cut, Vulture, and Grub ... Your Gluten-Free Diet Probably Exposes You to a Bunch of Arsenic and Mercury. A new study suggests its an "unintended ... New studies contradict existence of arsenic-loving bacteria. By Dan Amira @media (min-width: 0px) and (max-width: 599.9px) { . ...
Arsenic poisoning, harmful effects of various arsenic compounds on body tissues and functions. Arsenicals are used in numerous ... Arsenic is contained in many items used around the house. Both odourless and tasteless compounds of arsenic are found in some ... Arsenic poisoning, harmful effects of various arsenic compounds on body tissues and functions. Arsenicals are used in numerous ... and when eaten may cause arsenic poisoning. The brown alga Hizikia. , for example, contains sufficient arsenic to be used as a ...
Toxicological profile for Arsenic. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service. ...
High levels of arsenic in groundwater have poisoned thousands of people and may affect millions more. Only now is the true ... High levels of arsenic in groundwater were once believed to be confined to an area around the river delta, and Bangladesh in ... THE growing trend around the world to drink water from underground sources is causing a global epidemic of arsenic poisoning. ...
Urinary arsenic analysis is the most common method used worldwide for assessing the arsenic contamination of a population. In ... established the proficiency in arsenic speciation program to help laboratories worldwide assess the accuracy of their arsenic ... Arsenic in drinking water has been recognized for many decades in some regions of the world. People in these areas use ... This water can become contaminated from naturally-occurring sources of arsenic and/or human activities. ...
The admitted point was to pressure the U.S. Food and Drug Administration into setting a safety standard for arsenic in the ... Consumer Reports released a report of independent laboratory tests that found inorganic arsenic in some 200 rice products ... In other words, its not nearly as risky to us as arsenic in its inorganic forms. As I wrote in a post titled, Is Arsenic the ... Inorganic arsenic - as an example, the very poisonous compound arsenic trioxide (As2O3) is notably carbon free. And this ...
Garlic combats arsenic poisoning. Garlic may provide some relief for millions of Bangladeshis and Indians whose drinking water ... Rats which were also fed garlic extracts had 40 per cent less arsenic in their blood and liver, and passed 45 per cent more ... Keya Chaudhuri of the Indian Institute of Chemical Biology in Kolkata, and her colleagues gave rats daily doses of arsenic in ... Chaudhuri says that sulphur-containing substances in garlic scavenge arsenic from tissues and blood. She advises people in at- ...
... but a new Food and Drug Administration study has found arsenic in chickens treated with 3-Nitro® (also known as Roxarsone), a ... Keep in mind - arsenic is a widespread contaminant in water, air, soil and other foods. Yes, thats a bit daunting, but it ... The findings prompted Pfizer to pull Roxarsone off the market in the U.S. (the European Union banned arsenic in poultry feed in ... Recent research prompted the agency to update its position after finding inorganic arsenic, a known human carcinogen, in edible ...
One major initiative for addressing the arsenic problem is the Bangladesh Arsenic Mitigation Water Supply Project (BAMWSP), run ... Laced With Arsenic. Poisoned Waters. Bangladesh, Desperately Seeking Solutions Bangladesh has both too much water and not ... Arsenic poisoning at the levels were seeing in Bangladesh will take 10 or 20 years off a persons life, without any doubt. ... Moreover, arsenic-contaminated water is not limited to Bangladesh, and the scientific work now under way-if it is allowed to ...
Exposure to Arsenic. Since arsenic is found naturally in the environment, you will be exposed to some arsenic by eating food, ... Arsenic combined with these elements is called inorganic arsenic. Arsenic combined with carbon and hydrogen is referred to as ... Elemental arsenic (sometimes referred to as metallic arsenic) is a steel grey solid material. However, arsenic is usually found ... Smelters may collect this dust and take out the arsenic as a compound called arsenic trioxide (As2O3). However, arsenic is no ...
The arsenic trioxide was held, and succimer was initiated as a chelating agent for suspected arsenic toxicity. Blood and urine ... Gastrointestinal side effects from arsenic poisoning are common and well described. Symptoms of acute arsenic toxicity include ... B. Katzung, "Arsenic," in Basic and Clinical Pharmacology, p. 949, McGraw-Hill, New York, NY, USA, 2007. View at Google Scholar ... One week later, arsenic therapy was reintroduced at a dose of 0.1 mg/kg/day. On day 14 of therapy, the patient developed mental ...
In the environment, arsenic is combined with oxygen, chlorine, and sulfur to form inorganic arsenic compounds. Arsenic in ... Arsenic News and Research. RSS Arsenic is a naturally occurring element widely distributed in the earths crust. ... Combination of arsenic and existing leukemia drug may combat cancer Investigators have discovered that arsenic in combination ... Breathing high levels of inorganic arsenic can give you a sore throat or irritated lungs. Ingesting very high levels of arsenic ...
... arsenic pentoxide, arsenic v oxide, arsenic anhydride, arsenic v pentoxide, arsenic pentaoxide, arsenic oxide, diarsenic ... arsenic, inorganic, arsenic-75, arsen, gray, grey, black, metallic, compounds, colloidal PubChem CID: 5359596 ChEBI: CHEBI: ... arsenic, inorganic, arsenic-75, arsen, gray, grey, black, metallic, compounds, colloidal PubChem CID: 5359596 ChEBI: CHEBI: ... Arsenic(III) oxide, primary standard, ACS, 99.95-100.05%, Alfa Aesar™. CAS: 1327-53-3 Molecular Formula: As2O3 MDL Number: ...
Arsenic Trioxide Injection: learn about side effects, dosage, special precautions, and more on MedlinePlus ... Before receiving arsenic trioxide injection,. *tell your doctor and pharmacist if you are allergic to arsenic trioxide, any ... Talk to your doctor about using birth control to prevent pregnancy during your treatment with arsenic trioxide. Arsenic ... Arsenic trioxide comes as a solution (liquid) to be injected into a vein by a doctor or nurse in a medical office or clinic. ...
Researchers have found that arsenic thwarts the action of glucocorticoid hormones, suggesting a possible explanation of how ...
The group urges FDA to set strict safety guidelines for arsenic and lead in juice and other foods. ... of store-bought apple and grape juice has more arsenic, and 25% has more lead, than the EPA allows in water, Consumer Reports ... Total arsenic isnt the point, however. Organic arsenic isnt currently considered dangerous. But inorganic arsenic is deadly ... Reducing Arsenic Risk. Here is advice from Consumer Reports for reducing arsenic risk:. *Test your water if you get it from a ...
ARSENIC IN ULCERATIVE ENDOCARDITIS. Br Med J 1922; 2 doi: https://doi.org/10.1136/bmj.2.3217.402-b (Published 26 August 1922) ...
Arsenic contamination is a big threat to a huge population of in the Gangetic plains.of Bihar.Most of the mitigation intiatives ... Arsenic Toxicity and Obstetric Outcome Arsenic Toxicity and Obstetric Outcome Arsenic in drinking water = 630 μg/L Arsenic in ... Arsenic In Ground Water Of Bihar * 1. Arsenic Contamination in Ground Water of Bihar ,India Arsenic Mitigation: The Way Forward ... Arsenic Contamination in Ground Water by SK Emamul Haque 3118 views * Arsenic Poisoning in Bihar - Proble... by Ashok Ghosh ...
Media Advisory: Free Arsenic Testing for Water Wells in Licking County, Ohio Free arsenic testing for private water wells in ... Arsenic Concentrations High in Wind Cave Water Bodies High concentrations of naturally occurring arsenic are present in ... Arsenic in Ground-Water Resources of the United States. Arsenic is a naturally occurring element in rocks, soils, and the ... Arsenic (Agency for Toxic Substances and Disease Registry). *Map of Arsenic concentrations in groundwater of the United States ...
We used to focus on manmade sources of arsenic, but I think were coming to the realization that natural sources of arsenic are ... CURWOOD: So, arsenic mimics the hormone we commonly call cortisone, in the cortisol family. Or, does it block it from fitting ... Arsenic doesnt block the binding of glucocoriticoids to the receptor, and it doesnt act like a hormone. The thing that it ... There are certain types of rock that are heavily arsenic-laden. If you happen to live in one of these areas and you drill a ...
1) Even though arsenic wasnt the agent of death arsenic and old lace has a much nicer artistic ring to it then strychnine ... For most folks this evokes the thought of arsenic and poison. Well, in spite of the title of the entertainment, arsenic was the ... No debate arsenic is a poison, but it has been used medicinally for more than 3000 years to treat human illnesses, including ... No question too much arsenic can cause trouble, but so can too much vitamin A which can cause liver damage. Too much vitamin D ...
  • Decomposes above 300°C . This produces toxic fumes (arsenic trioxide - see ICSC 0378) and oxygen. (ilo.org)
  • Inorganic arsenic - as an example, the very poisonous compound arsenic trioxide (As2O3) is notably carbon free. (wired.com)
  • Smelters may collect this dust and take out the arsenic as a compound called arsenic trioxide (As2O3). (cdc.gov)
  • The introduction of all- trans retinoic acid (ATRA) and arsenic trioxide has brought about tremendous advancement in the treatment of acute promyelocytic myelogenous leukemia (APML). (hindawi.com)
  • however, the introduction of all- trans retinoic acid (ATRA) and arsenic trioxide has brought about tremendous advancement in treatment strategies, with the majority of newly diagnosed and relapsed patients being able to be cured with these agents [ 4 , 5 ]. (hindawi.com)
  • Arsenic trioxide induces remission in 70%-85% of adults with newly diagnosed or refractory acute promyelocytic leukemia [ 6 ]. (hindawi.com)
  • One year after induction therapy, she had clinical relapse, and therapy was changed to arsenic trioxide at a dose of 0.15 mg/kg/day (17 mg daily), which was administered intravenously 5 days per week for an anticipated 20 dose total. (hindawi.com)
  • The arsenic trioxide was held, and succimer was initiated as a chelating agent for suspected arsenic toxicity. (hindawi.com)
  • Nexus Pharmaceuticals announced today the immediate availability in the United States for Arsenic Trioxide Injection. (news-medical.net)
  • Nexus Pharmaceuticals' Arsenic Trioxide Injection is available as 10 mg per 10 mL vial for injection. (news-medical.net)
  • Arsenic trioxide should be given only under the supervision of a doctor who has experience in treating people who have leukemia (cancer of the white blood cells). (medlineplus.gov)
  • Arsenic trioxide may cause a serious or life-threatening group of symptoms called APL differentiation syndrome. (medlineplus.gov)
  • Arsenic trioxide may cause QT prolongation (heart muscles take longer to recharge between beats due to an electrical disturbance), which can cause serious or life-threatening heart rhythm problems. (medlineplus.gov)
  • Your doctor will monitor you closely and will order an ECG and other tests during your treatment with arsenic trioxide. (medlineplus.gov)
  • Call your doctor immediately if you have an irregular or fast heartbeat or if you faint during your treatment with arsenic trioxide. (medlineplus.gov)
  • Arsenic trioxide injection may cause encephalopathy (confusion, memory problems, and other difficulties caused by abnormal brain function). (medlineplus.gov)
  • Your doctor will order certain tests before and after to check your body's response to arsenic trioxide. (medlineplus.gov)
  • Talk to your doctor about the risks of taking arsenic trioxide. (medlineplus.gov)
  • Arsenic trioxide is in a class of medications called anti-neoplastics. (medlineplus.gov)
  • Arsenic trioxide comes as a solution (liquid) to be injected into a vein by a doctor or nurse in a medical office or clinic. (medlineplus.gov)
  • Arsenic trioxide is usually injected over 1 to 2 hours, but it may be injected over as long as 4 hours if side effects are experienced during the infusion. (medlineplus.gov)
  • tell your doctor and pharmacist if you are allergic to arsenic trioxide, any other medications, or any of the ingredients in arsenic trioxide injection. (medlineplus.gov)
  • In recent times, Chinese researchers reported that arsenic trioxide induced remissions in patients with promyelocytic leukemia, a cancer of the blood, including those who had relapsed after other prior therapy. (canadafreepress.com)
  • This page contains brief information about arsenic trioxide and a collection of links to more information about the use of this drug, research results, and ongoing clinical trials. (cancer.gov)
  • Arsenic trioxide is also being studied in the treatment of other types of cancer. (cancer.gov)
  • Find Clinical Trials for Arsenic Trioxide - Check for trials from NCI's list of cancer clinical trials now accepting patients. (cancer.gov)
  • Despite this, it has been used in medicine for over 2000 years, and the arsenic compound arsenic trioxide (ATO) is FDA approved for the treatment of acute promyelocytic leukemia. (redorbit.com)
  • Information about drug Arsenic Trioxide combination includes cost of the drug and the type of drug - tablet, capsule, syrup, cream, gel, ointment, liquid or injection. (medindia.net)
  • The generic Arsenic Trioxide combination is manufactured by one company. (medindia.net)
  • Medindia's drug directory has currently one brand of Arsenic Trioxide listed . (medindia.net)
  • In the 1990s, research showed that an arsenic compound, arsenic trioxide , was effective in the treatment of acute promyelocytic leukemia. (cancer.gov)
  • What is the most important information I should know about arsenic trioxide? (cigna.com)
  • Arsenic trioxide can cause a serious heart problem. (cigna.com)
  • What is arsenic trioxide? (cigna.com)
  • Arsenic trioxide is a cancer medication that interferes with the growth and spread of cancer cells in the body. (cigna.com)
  • Arsenic trioxide is used to treat a cancer of the blood and bone marrow called acute promyelocytic (pro-MYE-loe-SIT-ik) leukemia, or APL. (cigna.com)
  • Arsenic trioxide is sometimes given in combination with another medicine called tretinoin. (cigna.com)
  • Arsenic trioxide may also be used for other purposes not listed in this medication guide. (cigna.com)
  • What should I discuss with my healthcare provider before receiving arsenic trioxide? (cigna.com)
  • You should not be treated with arsenic trioxide if you are allergic to it. (cigna.com)
  • Arsenic trioxide can harm an unborn baby or cause birth defects if the mother or father is using this medicine. (cigna.com)
  • How is arsenic trioxide given? (cigna.com)
  • Arsenic trioxide is given as an infusion into a vein. (cigna.com)
  • You must remain under the care of a doctor while you are using arsenic trioxide. (cigna.com)
  • In such processing, arsenide is converted to arsenic trioxide , which is volatile at high temperatures and is released into the atmosphere. (wikipedia.org)
  • That drug is arsenic trioxide, long part of the arsenal of ancient Chinese medicine and recently adopted by Western oncologists for a type of leukemia. (northwestern.edu)
  • The nanobin consists of nanoparticulate arsenic trioxide encapsulated in a tiny fat vessel (a liposome) and coated with a second layer of a cloaking chemical that prolongs the life of the nanobin and prevents scavenger cells from seeing it. (northwestern.edu)
  • One such compound - called arsenic trioxide (ATO) - is still used today, and it actually gained Food and Drug Administration (FDA) approval under the marketing name Trisenox in 2001. (medicalnewstoday.com)
  • It burns in oxygen to form arsenic trioxide and arsenic pentoxide, which have the same structure as the more well-known phosphorus compounds, and in fluorine to give arsenic pentafluoride. (wikipedia.org)
  • It can be prepared by reacting hydrogen fluoride, HF, with arsenic trioxide: 6HF + As2O3 → 2AsF3 + 3H2O It has a pyramidal molecular structure in the gas phase which is also present in the solid. (wikipedia.org)
  • Immediately Dangerous to Life or Health (IDHL) Value Profile: Arsenic (inorganic compounds, as As) -NIOSH reviews relevant scientific data and researches methods for developing IDLH values. (cdc.gov)
  • NIOSH Skin Notation (SK) Profiles: Arsenic and Inorganic Arsenic Containing Compounds -DHHS (NIOSH) Publication No. 2017-184. (cdc.gov)
  • Arsenic compounds are used to preserve wood, as pesticides, and in some industries. (medlineplus.gov)
  • It is present in the air as dust from industrial output, burning of arsenic containing compounds, and the wind blowing arsenic containing soil. (in.gov)
  • In the environment, arsenic is combined with oxygen, chlorine, and sulfur to form inorganic arsenic compounds. (cdc.gov)
  • Arsenic in animals and plants combines with carbon and hydrogen to form organic arsenic compounds. (cdc.gov)
  • Inorganic arsenic compounds are mainly used to preserve wood. (cdc.gov)
  • Organic arsenic compounds are used as pesticides, primarily on cotton fields and orchards. (cdc.gov)
  • Many common arsenic compounds can dissolve in water. (cdc.gov)
  • Almost nothing is known regarding health effects of organic arsenic compounds in humans. (cdc.gov)
  • Studies in animals show that some simple organic arsenic compounds are less toxic than inorganic forms. (cdc.gov)
  • The recommendations on this Card also apply to inorganic pentavalent arsenic compounds (arsenates). (ilo.org)
  • Arsenic poisoning , harmful effects of various arsenic compounds on body tissues and functions. (britannica.com)
  • Most inorganic and organic arsenic compounds are white or colorless powders that do not evaporate. (cdc.gov)
  • In the past, inorganic arsenic compounds were predominantly used as pesticides, primarily on cotton fields and in orchards. (cdc.gov)
  • Inorganic arsenic compounds can no longer be used in agriculture. (cdc.gov)
  • Some organic arsenic compounds are used as additives in animal feed. (cdc.gov)
  • Another important use of arsenic compounds is in semiconductors and light-emitting diodes. (cdc.gov)
  • Inorganic and organic arsenic compounds are white in color, and have no smell or special taste. (virginia.gov)
  • Inorganic arsenic compounds are mainly used as a preservative in pressure-treated wood to make it resistant to rotting and decay. (virginia.gov)
  • Organic arsenic compounds are used to make insect killers, weed killers, and fungicides. (virginia.gov)
  • Direct skin contact with inorganic arsenic compounds can cause skin irritation, including redness and swelling. (virginia.gov)
  • Although the use of arsenic compounds in wood products was banned in 2004, the deadly element still infiltrates drinking water through mining, which exposes the water table to natural arsenic found deep within Sweden's bedrock layer. (inhabitat.com)
  • Dr. Twafik and colleagues were interested in unraveling the mechanism the bacteria use to distinguished between arsenic-based compounds and phosphate and to control their uptake. (go.com)
  • This gave the bacteria a preference for phosphate even in environments where concentrations of arsenic compounds were more than 3,000 times higher than phosphates. (go.com)
  • Still, the team acknowledges that this strong preference for phosphates can allow some arsenic compounds to enter the cell. (go.com)
  • We provide a range of approaches in which arsenic compounds can be removed, rejected, recycled, detoxified or "fixed", typically by pressure oxidization. (sgs.com)
  • Inorganic arsenic compounds were widely used as pesticides until the mid-1900s and were found in some medicines until the 1970s. (cancer.gov)
  • Arsenic and Inorganic Arsenic Compounds, Report on Carcinogens, Fourteenth Edition. (cancer.gov)
  • The R.I.C.E (Reducing food-based Inorganic Compounds Exposure) Act would require the Food and Drug Administration to set a maximum permissible level of inorganic arsenic in rice and food containing rice. (foodsafetynews.com)
  • It is produced in the analysis of arsenic compounds. (wikipedia.org)
  • Arsenic biochemistry refers to biochemical processes that can use arsenic or its compounds, such as arsenate . (wikipedia.org)
  • Arsenic is a moderately abundant element in Earth's crust , and although many arsenic compounds are often considered highly toxic to most life, a wide variety of organoarsenic compounds are produced biologically and various organic and inorganic arsenic compounds are metabolized by numerous organisms . (wikipedia.org)
  • Arsenic biochemistry has become topical since many toxic arsenic compounds are found in some aquifers , [1] potentially affecting many millions of people via biochemical processes. (wikipedia.org)
  • Arsenic (V) compounds are easily reduced to arsenic (III) and could have served as an electron acceptor on primordial Earth. (wikipedia.org)
  • A discussion is provided on the suitability of the various biomarkers to serve as indicators of acute or chronic exposure to inorganic arsenic and the various factors (e.g., dietary intake of arsenic compounds) that can influence the indicators. (nih.gov)
  • However, some arsenic compounds - in carefully measured doses - can be used in medical treatments. (medicalnewstoday.com)
  • However, some arsenic-based compounds have been used throughout history to treat various medical conditions. (medicalnewstoday.com)
  • These applications are declining with the increasing recognition of the toxicity of arsenic and its compounds. (wikipedia.org)
  • A few species of bacteria are able to use arsenic compounds as respiratory metabolites. (wikipedia.org)
  • Accurate laboratory tests that can detect arsenic contamination are essential. (cdc.gov)
  • Urinary arsenic analysis is the most common method used worldwide for assessing the arsenic contamination of a population. (cdc.gov)
  • The Dartmouth College toxic metals program offers a very helpful FAQ regarding its own findings on arsenic contamination of brown rice products. (wired.com)
  • Arsenic contamination is a big threat to a huge population of in the Gangetic plains.of Bihar.Most of the mitigation intiatives are failures in Bihar.A few alternative mitigation strategy is suggested. (slideshare.net)
  • Arsenic exists in our environment as a naturally occurring mineral and as a result of contamination from industrial activity and pesticides that used to be allowed in agriculture. (go.com)
  • In the end, Dr. Oz forced the government to reconsider the issue, to take a more serious look at arsenic contamination of juice drinks, which are primarily consumed by children. (wired.com)
  • Dozens of people came out Tuesday night in Yellowknife to voice their fears about arsenic contamination at Giant Mine and the government's clean-up plans. (cbc.ca)
  • Arsenic contamination in drinking water is a global problem, and while there are ways to remove arsenic, they require extensive hardware and high-pressure pumps that run on electricity," said center director and lead author Vicki Colvin. (eurekalert.org)
  • Several Washington State Dept. of Ecology studies confirmed arsenic and lead contamination in King County soils. (kingcounty.gov)
  • The studies found arsenic and lead contamination at various levels throughout the sample area. (kingcounty.gov)
  • The SORB 33 adsorption arsenic removal system reduces arsenic contamination across a range of water treatment application sizes. (environmental-expert.com)
  • However, we have increased the amount of inorganic arsenic in our soil due to pesticides use, water contamination, CCA wood preservatives, sewage sludge, and air pollution from burning fossil fuels and metal smelting. (ecochildsplay.com)
  • MaineHousing's Arsenic Abatement Program provides grants to eligible single-family homeowners or landlords with private well water that shows evidence of high levels of arsenic contamination. (mainehousing.org)
  • The organization aims to install 21,000 new arsenic-free water points over the next five years, with priority given to communities worst affected by contamination. (unicef.org)
  • The New York-based rights group blames nepotism and neglect by Bangladeshi officials, saying they're deliberately having new wells dug in areas convenient for friends, family members and political supporters and allies, rather than in places where arsenic contamination is highest or large numbers of poor villagers are being exposed. (washingtontimes.com)
  • Human Rights Watch based its report on a survey of about 125,000 government wells dug from 2006 to 2012 specifically to give villagers safer options, after an earlier survey of 5 million wells found millions exposed to water that exceeded Bangladesh's arsenic contamination limit of 50 parts per billion. (washingtontimes.com)
  • Although deep wells can often reach groundwater of better quality, government programs to install new wells don't make it a priority to install them in areas where the risk of arsenic contamination is relatively high. (hrw.org)
  • From 1999 to 2006, the government, international donors, and nongovernmental organizations oversaw a concerted effort to mitigate arsenic contamination in Bangladesh's groundwater. (hrw.org)
  • Arsenic is an element that occurs in the environment from both natural and anthropogenic sources including erosion of arsenic-containing rocks, volcanic eruptions, contamination from mining and smelting ores, and previous or current use of arsenic-containing pesticides (Ref. 1). (fda.gov)
  • Arsenic contamination of groundwater is a problem that affects millions of people across the world. (wikipedia.org)
  • The discovery of high concentrations of naturally occurring arsenic in the groundwater is thus a bitter irony. (worldwatch.org)
  • Some 35 million people are believed to be exposed beyond the national standard, and 57 million are exposed to arsenic concentrations above the WHO standard of 10 parts per billion. (worldwatch.org)
  • Instead of using arsenic in place of phosphorous, the scientists say, the bacteria simply can tolerate extremely high concentrations of the toxic chemical. (popularmechanics.com)
  • Arsenic was detected more frequently and at higher concentrations in wells in the West than in the East. (usgs.gov)
  • The greatest concern was in the Southwest , where concentrations of arsenic exceeded the MCL in about 16 percent of drinking-water wells sampled. (usgs.gov)
  • In the Southwest basin-fill aquifers , arsenic concentrations in drinking-water wells exceeded the MCL more than twice as frequently as in drinking-water wells nationwide. (usgs.gov)
  • maybe use photo from p. 18] Factors that contribute to elevated concentrations of arsenic in these aquifers include long groundwater residence times , rock type, high pH, arid climate, and irrigation practices. (usgs.gov)
  • The USEPA estimated in 2001 that the annual cost to reduce arsenic concentrations to below the MCL would range from $0.86 to $32 per household for customers of large public water systems (more than 10,000 people) to $165 to $327 per household for very small systems (25-500 people). (usgs.gov)
  • Understanding the factors that affect concentrations of arsenic and other contaminants with geologic sources in groundwater can help water suppliers prioritize areas for new groundwater development and reduce treatment costs. (usgs.gov)
  • However, a study this week in The Lancet medical journal found high concentrations of arsenic in the king's hair and contends the severity and duration of his episodes of illness may have been caused by the toxic substance. (redorbit.com)
  • The World Health Organization estimates that more than 800 million people worldwide are being exposed to high concentrations of arsenic," Ali said. (reuters.com)
  • And in the U.S., statistics from the (Centers for Disease Control and Prevention) and the (U.S. Geological Survey) show that 45 million Americans are drinking well water and 2.1 million are drinking water from wells with high concentrations of arsenic. (reuters.com)
  • 2007). At relatively low concentrations (in the submicromolar range) certain adaptive cellular responses to arsenic-induced oxidative stress [i.e., induction of antioxidant enzymes and reduced reactive oxygen species (ROS)] may result in an impairment of glucose-stimulated insulin secretion (Fu et al. (medscape.com)
  • Oxidative stress is also implicated in many aspects of arsenic toxicity, and a recent in vitro study suggests that transcription factor NF-E2-related factor 2 (Nrf2)-mediated antioxidant response may influence arsenite-induced impairment of glucose-stimulated insulin secretion in β-cells at low concentrations of arsenite (Fu et al. (medscape.com)
  • However, higher concentrations of dietary organic arsenic may be found in bivalve mollusks (clams, oysters, mussels) and crustaceans (crabs and lobsters), according to the Agency for Toxic Substances and Disease Registry. (cnn.com)
  • Of more than 100,000 arsenic concentrations submitted to EFSA for evaluation, some 98% were reported as total arsenic but only a few broke figures down into organic and inorganic. (sgs.com)
  • In the US the Food and Drug Administration has been measuring total arsenic concentrations in food products since 1991, but has yet to establish a specific standard. (sgs.com)
  • [ 29 ] In November 2012 CU published the results of a study showing that 223 samples of rice and rice-based products sold in the United States contained inorganic arsenic at concentrations ranging from 29.4 to 210 ppb. (medscape.com)
  • [ 30 ] In addition, Dartmouth investigators reported that brown rice syrup, a sweetener, might expose consumers to "significant concentrations" of inorganic arsenic. (medscape.com)
  • The FDA followed up with its own report on 1,300 samples of rice and rice products, which found that concentrations of inorganic arsenic ranged from an average 0.1 μg per serving in infant formula to an average 7.2 μg per serving in brown rice. (medscape.com)
  • In such products, we expect arsenic concentrations to be lower. (ewg.org)
  • In some places, intense concentrations exist as a result of industrial pollution and decades of agricultural use of lead- and arsenic-based pesticides. (ewg.org)
  • For that reason, federal and state governments have invested millions of dollars in reducing arsenic concentrations in drinking water. (ewg.org)
  • Assessment of arsenic exposure via drinking water is often based on the measured concentrations in the drinking water and estimations of the amount of water consumed. (nih.gov)
  • As mentioned in Chapter 3 , some foods, especially those of marine origin, often have high concentrations of arsenic mainly in the form arsenobetaine, which is not metabolized in the body but is rapidly excreted in the urine (Vahter et al. (nih.gov)
  • One serving of seafood might give rise to urinary arsenic concentrations of more than 1,000 µg/L (Norin and Vahter 1981). (nih.gov)
  • In comparison, concentrations of 5-50 µg/L are found in the urine of subjects with no intake of seafood arsenic or excessive exposure to inorganic arsenic in drinking water or in the working environment. (nih.gov)
  • Thus, consumption of such foods might result in increased urinary concentrations of DMA, and those increases might be interpreted as exposure to inorganic arsenic. (nih.gov)
  • Arsenic is believed to exert its toxicity by combining with certain enzymes (the organic catalysts of the cell), thereby interfering with cellular metabolism. (britannica.com)
  • Although acute pancreatitis is not commonly associated with arsenic toxicity, it should be considered as a possible side effect. (hindawi.com)
  • Research conducted at Montana State University shows that microbes in the human gut play an important role in protecting against arsenic toxicity, a problem that affects an estimated 200 million people who are exposed to arsenic through contaminated drinking water. (news-medical.net)
  • J)ust a glass or two of these arsenic-contaminated wines a day over time could result in dangerous toxicity to the consumer," the March 19 complaint states. (courthousenews.com)
  • Despite its toxicity, arsenic was commonly found in medicines in 19th-century England, as well as in some water supplies,' Tuppen said. (telegraph.co.uk)
  • Arsenic toxicity can occur through industrial exposure (see the image below), from contaminated wine or moonshine, or due to malicious intent. (medscape.com)
  • Clinical effects of arsenic toxicity depend on the chronicity of exposure (eg, acute, chronic) and the chemical form involved, which may be inorganic arsenic (pentavalent arsenic and trivalent arsenic), organic arsenicals, or arsine gas. (medscape.com)
  • Treatment of acute arsenic toxicity is supportive. (medscape.com)
  • About prawns/shrimps and arsenic toxicity. (madsci.org)
  • Subject: About prawns/shrimps and arsenic toxicity. (madsci.org)
  • I was told that someone could die of arsenic toxicity from eating a lot of shrimps/prawns. (madsci.org)
  • Of the chemicals in CCA, arsenic is the most dangerous due to its toxicity and ease of uptake by plants. (washingtoncitypaper.com)
  • The Department of Health and Human Services has determined that arsenic is a known carcinogen. (in.gov)
  • Today, the magazine Consumer Reports released a report ** on independent laboratory tests that found inorganic arsenic - a known carcinogen - in some 200 rice products purchased in grocery stores across the United States. (wired.com)
  • Recent research prompted the agency to update its position after finding inorganic arsenic, a known human carcinogen, in edible parts of the birds. (ewg.org)
  • In drinking-water supplies, arsenic poses a problem because it is toxic at low levels and is a known carcinogen. (usgs.gov)
  • Inorganic arsenic, which affects the drinking water of millions of people worldwide, has been previously shown to be a human carcinogen. (nih.gov)
  • Inorganic arsenic is a known carcinogen for humans. (latimes.com)
  • EPA has classified inorganic arsenic as a Group A, human carcinogen. (environmental-expert.com)
  • The EPA has labeled inorganic arsenic as a known carcinogen. (ecochildsplay.com)
  • Federal government scientists and regulators and food industry officials are scrambling to respond to emerging evidence that arsenic, a known human carcinogen, contaminates many otherwise healthy foods that contain rice. (ewg.org)
  • serve as a standard text book for graduate, postgraduate students and researchers in the field of Environmental Sciences and Hydrogeochemistry as well as researchers, environmental scientists and chemists, toxicologists, medical scientists and even for general public seeking an in-depth view of arsenic which had been classed as a carcinogen. (elsevier.com)
  • Arsenic is often listed as a carcinogen , which is a substance whose presence in a person's environment can lead to the development of cancer . (medicalnewstoday.com)
  • Arsenic is classified as a Group-A carcinogen. (wikipedia.org)
  • most of this arsenic is in an organic form called arsenobetaine that is much less harmful. (cdc.gov)
  • Well, first, 'total arsenic' refers to the fact that the tests look at two forms, or species, of the poison - organic and inorganic. (wired.com)
  • Organic, of course, refers to an arsenic compound that includes the element carbon. (wired.com)
  • And this matters because, as it turns out, the human body does a very reasonable job of metabolizing organic arsenic. (wired.com)
  • Use of these organic arsenic additives has been temporarily suspended due to the finding that they may convert to inorganic arsenic. (wired.com)
  • Arsenic combined with carbon and hydrogen is referred to as organic arsenic. (cdc.gov)
  • Although some fish and shellfish take in arsenic, which may build up in tissues, most of this arsenic is in an organic form called arsenobetaine (commonly called "fish arsenic") that is much less harmful. (cdc.gov)
  • Organic arsenic isn't currently considered dangerous. (webmd.com)
  • Arsenic can exist in several oxidation states with other elements as inorganic or organic arsenic. (virginia.gov)
  • Fish and shellfish may contain high levels of organic arsenic. (virginia.gov)
  • Organic arsenic is much less harmful than the inorganic form of arsenic, but may cause similar health effects at high levels. (virginia.gov)
  • The 40-page complaint claims that most of the arsenic found in the wines was "inorganic," which it says is more toxic than organic arsenic - arsenic that appears naturally in the soil. (courthousenews.com)
  • Most of the criticism focused on the point that his test results didn't differentiate organic arsenic from inorganic arsenic, the latter being about 500 times more poisonous than the former. (wired.com)
  • Next, the laboratory team will look to see if this finding is unique to arsenic or if it is applicable to other organic and inorganic carcinogens. (nih.gov)
  • Some of the arsenic found in rice is organic, a kind that is believed to be harmless. (cbsnews.com)
  • Organic arsenic is less toxic but still "of concern," according to the product-testing group. (latimes.com)
  • In a 2012 study by researchers at Dartmouth College, products that listed organic brown rice syrup as a primary ingredient, such as some toddler formulas and cereal bars , tested positive for higher levels of arsenic than products that didn't contain the ingredient or contained less of it. (cnn.com)
  • The organic forms of arsenic found in these types of seafood are generally considered nontoxic. (cnn.com)
  • Inorganic arsenic is more toxic than organic arsenic and more closely associated with the potential for longterm health effects. (sgs.com)
  • Fish and seafood are known to be high in arsenic, but mainly in its organic form. (sgs.com)
  • CODEX has a standard for total arsenic in various foods (fats, margarine, olive oil, vegetable oil, mineral water and salt), but the issue of organic against inorganic has not yet been addressed. (sgs.com)
  • Recently the use of organic brown rice syrup in health food came under scrutiny when a 2012 Dartmouth study revealed disturbing levels of arsenic in tested toddler formulas, cereal bars, and energy products. (ecochildsplay.com)
  • Since organic brown rice syrup is a concentrated form of rice, it will naturally contain more arsenic. (ecochildsplay.com)
  • Feb. 16, 2012 -- Organic brown rice syrup, a popular sweetener in organic and gluten-free foods -- including some formulas made for toddlers -- is a source of the toxin arsenic, a new study shows. (webmd.com)
  • Experts say regularly eating foods that use organic brown rice syrup as a main ingredient could expose a person to more arsenic than the government allows in drinking water, raising the risks for cancer and heart disease . (webmd.com)
  • When discussing the content of arsenic in foods it is essential to distinguish between organic and inorganic arsenic," she tells WebMD. (webmd.com)
  • Most of the arsenic found in rice is organic arsenic, the benign kind, and the U.S. rice industry is working with U.S. regulatory officials as they look into this issue," she says. (webmd.com)
  • Nearly a third of samples - both foreign and local - tested by the Hong Kong Organic Resource Center were found to have excessive inorganic arsenic content, which could damage a child's intelligence and increase the risk of cancer. (atimes.com)
  • The highest inorganic arsenic content was found in a sample of Select Organic Jasmine Rice imported from Thailand, which was recorded at 160 micrograms per kilogram. (atimes.com)
  • Arsenic is found in both inorganic and organic forms (together referred to as total arsenic), and inorganic arsenic is generally considered more toxic than organic arsenic (Ref. 2). (fda.gov)
  • This water can become contaminated from naturally-occurring sources of arsenic and/or human activities. (cdc.gov)
  • The USGS studies local and national sources of arsenic to help health officials better manage our water resources. (usgs.gov)
  • We used to focus on manmade sources of arsenic, but I think we're coming to the realization that natural sources of arsenic are probably a much bigger human health problem. (loe.org)
  • Anthropogenic (man-made) sources of arsenic, like the natural sources, are mainly arsenic oxides and the associated anions. (wikipedia.org)
  • Man-made sources of arsenic, include wastes from mineral processing, swine and poultry farms. (wikipedia.org)
  • Rice, which I think a lot of people would think of as very healthy, may be a real source of exposure to inorganic arsenic, above and beyond drinking-water arsenic," says Michael S. Bloom, PhD, an assistant professor at the University at Albany in New York. (cbsnews.com)
  • Chronic (long-term) inhalation exposure to inorganic arsenic in humans is associated with irritation of the skin and mucous membranes. (environmental-expert.com)
  • that increase would invalidate urinary arsenic as an indicator of exposure to inorganic arsenic. (nih.gov)
  • 1994). Therefore, the intake of seafood, especially seaweed, should be investigated when urinary metabolites of arsenic are to be used for evaluation of exposure to inorganic arsenic. (nih.gov)
  • In recent assessments, the Joint Food and Agriculture Organization/World Health Organization (FAO/WHO) Expert Committee on Food Additives (JECFA) (Ref. 2), which includes participation by U.S. FDA scientists, concluded that food can be a major contributor to inorganic arsenic exposure, and the European Food Safety Authority (EFSA) (Ref. 3) concluded that dietary exposure to inorganic arsenic should be reduced. (fda.gov)
  • These findings suggest a need to reduce exposure to inorganic arsenic from food. (fda.gov)
  • Apple juice is one source of exposure to inorganic arsenic from food. (fda.gov)
  • FDA considers that it is possible to further reduce public exposure to inorganic arsenic from apple juice in general, and specifically from apple juice that currently may contain inorganic arsenic at levels above 10 ppb. (fda.gov)
  • There are tests that can measure arsenic in your blood, urine, hair or fingernails. (in.gov)
  • Definitive diagnosis of arsenic poisoning is based on the finding of arsenic in the urine and in hair or nails. (britannica.com)
  • Blood and urine toxicology levels of arsenic were significantly elevated 25 days after cessation of therapy. (hindawi.com)
  • Moreover, a scientific survey commissioned by Consumer Reports -- using CDC survey data -- found that people who reported drinking apple juice or grape juice have about 20% higher levels of arsenic in the urine than those who didn't drink juice. (webmd.com)
  • According to the study: "Two years after their treatment the patients had arsenic blood and urine levels well below safety limits, and only slightly higher than controls. (canadafreepress.com)
  • There are tests to measure the level of arsenic in blood, urine, hair, or fingernails. (virginia.gov)
  • A urine test is the most reliable to determine arsenic exposure that has happened within a few days. (virginia.gov)
  • Arsenic exposure was evaluated in urine samples. (reuters.com)
  • For the study, researchers measured arsenic levels in the urine of 229 pregnant women in New Hampshire, a state where 40% of people get their water from wells. (cbsnews.com)
  • Even after accounting for arsenic in drinking water, researchers found that women who had recently eaten rice had slightly higher levels of inorganic arsenic -- the toxic form -- in their urine, compared to women who had not eaten rice. (cbsnews.com)
  • Urine arsenic measurement is a better measure of arsenic poisoning. (labcorp.com)
  • Two years later, another Dartmouth study revealed that arsenic in pregnant women's urine increased with rice consumption. (ecochildsplay.com)
  • In this chapter, the subcommittee evaluates various biomarkers (e.g., arsenic in urine, blood, hair, and nails) as meaningful measures of the absorbed dose of inorganic arsenic. (nih.gov)
  • The concentration of total arsenic in urine has often been used as an indicator of recent exposure because urine is the main route of excretion of most arsenic species (see, e.g. (nih.gov)
  • A better measurement of the intake of inorganic arsenic can be obtained from the concentration of inorganic arsenic and its metabolites monomethylarsonic acid (MMA) and dimethylarsinic acid (DMA) in the urine (see Chapters 3 and 5 ). (nih.gov)
  • There are two main forms of arsenic, one more difficult to reject than the other. (technologyreview.com)
  • Today we discriminate between two forms of arsenic. (sgs.com)
  • These applications are controversial as they introduce soluble forms of arsenic into the environment. (wikipedia.org)
  • The United States' Environmental Protection Agency states that all forms of arsenic are a serious risk to human health. (wikipedia.org)
  • A five-year, $2.7 million grant from the National Institute of Environmental Health Sciences will help researchers at the University of Illinois at Chicago answer basic questions about the role of arsenic in the development of diabetes and examine the mechanisms by which selenoproteins - found in the human body in 25 different forms - counter the effects of arsenic. (news-medical.net)
  • CURWOOD: How can somebody protect themselves and their family from the effects of arsenic in the drinking water? (loe.org)
  • Pichler suspects that individuals with high blood pressure might be more susceptible to the deleterious effects of arsenic. (reuters.com)
  • The poisonous effects of arsenic, a crystalline metalloid found in the Earth's crust, are linked an array of health problems, including cancers of the skin, lung, bladder, kidney and liver. (telegraph.co.uk)
  • I would personally not buy formula made of brown rice," says Navas-Acien, who studies the health effects of arsenic exposure. (webmd.com)
  • High levels of arsenic in groundwater were once believed to be confined to an area around the river delta, and Bangladesh in particular. (newscientist.com)
  • Keya Chaudhuri of the Indian Institute of Chemical Biology in Kolkata, and her colleagues gave rats daily doses of arsenic in their water, in levels equivalent to those found in groundwater in Bangladesh and West Bengal. (newscientist.com)
  • There has been a substantial amount of research done to address arsenic in groundwater and drinking-water supplies around the country. (usgs.gov)
  • Whether the arsenic is released from these geologic sources into groundwater depends on the chemical form of the arsenic, the geochemical conditions in the aquifer, and the biogeochemical processes that occur. (usgs.gov)
  • Arsenic also can be released into groundwater as a result of human activities, such as mining, and from its various uses in industry, in animal feed, as a wood preservative, and as a pesticide. (usgs.gov)
  • Possibly the worst case ever of arsenic poisoning occurred in Bangladesh, where over 100 million people 2 were poisoned by arsenic in groundwater supplies. (usgs.gov)
  • In a national study of groundwater quality , the USGS found that arsenic was detected in nearly half of the wells sampled in parts of aquifers used for drinking-water supply at a concentration of 1 µg/L or greater. (usgs.gov)
  • The USGS investigates the presence and effect of arsenic in drinking water supplies, monitors the worldwide distribution of arsenic in groundwater, and assesses the impact of arsenic on local stream sediment chemistry. (usgs.gov)
  • If you happen to live in one of these areas and you drill a well, the groundwater will be contaminated from the arsenic that leaches out of these rocks. (loe.org)
  • Inorganic arsenic is naturally present at high levels in the groundwater of certain countries, including the United States. (cancer.gov)
  • ETI is offering financial support to assist in a proposed project entitled 'Water well remediation of arsenic contaminated groundwater' with partners at the Chinese University of Geosciences. (environmental-expert.com)
  • Nor has it happened in countless other villages still relying on arsenic-contaminated groundwater decades after it was revealed as a major threat across the country. (washingtontimes.com)
  • But they inadvertently tapped into arsenic, a naturally occurring and toxic element found in the soil and groundwater of some areas of the world, including vast delta regions like Bangladesh and eastern India. (washingtontimes.com)
  • Arsenic also kills about 45,000 Bangladeshis every year, and is known to be in the groundwater of at least 30 countries, including the U.S., Canada and China. (washingtontimes.com)
  • Scientists first discovered arsenic in Bangladesh's groundwater in 1993, sounding alarm bells worldwide about a massive public health crisis pouring from the millions of hand-cranked tube wells tapping water from underground. (washingtontimes.com)
  • This volume presents the recent developments in the field of arsenic in soil and groundwater. (elsevier.com)
  • Written in simple English, and few technical terms, the book is designed to create interest within the countries with occurrences of arsenic in drinking water with · an update the current status of knowledge on the dynamics of natural arsenic from the aquifers through groundwater to food chain and efficient techniques for arsenic removal. (elsevier.com)
  • In 1995, an international conference in Kolkata helped draw the world's attention to the problem of naturally occurring arsenic in the groundwater across huge swaths of rural Bangladesh. (hrw.org)
  • After following participants for up to about seven years, the researchers found that those with higher levels of arsenic were more likely to have thickening of the left ventricle. (reuters.com)
  • Among participants with higher blood pressure levels - above 120/80 - or those using blood-pressure lowering drugs, the impact of arsenic appeared to be stronger: higher levels of arsenic were linked to a 58 percent greater chance of developing left ventricular hypertrophy in this group. (reuters.com)
  • Well water sometimes has higher levels of arsenic than water from municipal systems, which must meet federal safety standards. (cbsnews.com)
  • Her studies have found that brown rice contains higher levels of arsenic than white rice, because arsenic concentrates in the outer layer of rice bran. (cbsnews.com)
  • Arsenic can get into air, water, and the ground from wind-blown dust. (medlineplus.gov)
  • They have no smell, and most have no special taste, so you cannot tell if arsenic is present in your food, water, or air. (in.gov)
  • If you live in an area with naturally high levels of arsenic or near a hazardous waste site, you may take arsenic in through your water or from food grown in the soil. (in.gov)
  • Because arsenic is a natural part of the environment, low levels of arsenic are present in soil, water, food, and air. (in.gov)
  • Arsenic occurs naturally in soil and minerals and may enter the air, water, and land from wind-blown dust and may get into water from runoff and leaching. (cdc.gov)
  • Most of the arsenic in water will ultimately end up in soil or sediment. (cdc.gov)
  • Ingesting small amounts present in your food and water or breathing air containing arsenic. (cdc.gov)
  • THE growing trend around the world to drink water from underground sources is causing a global epidemic of arsenic poisoning. (newscientist.com)
  • Arsenic in drinking water has been recognized for many decades in some regions of the world. (cdc.gov)
  • So while, the EPA drinking water standard is 10 ppb in a liter of water and while the rice readings are higher than that - roughly between 20 and 400 ppb total arsenic load per serving - they can't be measured against each other in a meaningful way. (wired.com)
  • Garlic may provide some relief for millions of Bangladeshis and Indians whose drinking water is contaminated with arsenic. (newscientist.com)
  • Arsenic is a potent poison and the government has a limit on it in water but not in wine. (courant.com)
  • The feds limit arsenic in water to 0.010 milligrams per liter, or 10 parts per billion. (courant.com)
  • Keep in mind - arsenic is a widespread contaminant in water , air, soil and other foods. (ewg.org)
  • Thus, you usually cannot tell if arsenic is present in your food, water, or air. (cdc.gov)
  • Thus, arsenic can get into lakes, rivers, or underground water by dissolving in rain or snow or through the discharge of industrial wastes. (cdc.gov)
  • Some of the arsenic will stick to particles in the water or sediment on the bottom of lakes or rivers, and some will be carried along by the water. (cdc.gov)
  • Nov. 30, 2011 -- Ten percent of store-bought apple and grape juice samples have more arsenic -- and 25% have more lead -- than the Environmental Protection Agency allows in bottled water, a Consumer Reports study finds. (webmd.com)
  • The Environmental Protection Agency (EPA) sets a standard of 10 parts per billion ( ppb ) of total arsenic in drinking water. (webmd.com)
  • But that's for "long-term, chronic exposure to arsenic in drinking water," according to the EPA. (webmd.com)
  • According to the U.S. Agency for Toxic Substances and Disease Registry, drinking water generally contains about 2 ppb of arsenic, although some areas have considerably higher levels. (webmd.com)
  • In 2001, the USEPA lowered the MCL for arsenic in public-water supplies to 10 micrograms per liter (µg/L) from 50 µg/L. (usgs.gov)
  • Whether across the U.S. or around the world, the USGS helps measure and monitor drinking water supplies for contaminants like arsenic. (usgs.gov)
  • For example, dangerously high levels of arsenic have been found in drinking water wells in more than 25 states in the United States, potentally exposing 2.1 million people 1 to drinking water high in arsenic. (usgs.gov)
  • This map shows estimates of how many private domestic well users in each county may be drinking water with levels of arsenic of possible concern for human health. (usgs.gov)
  • The Bush administration is putting the brakes on regulations that would sharply reduce the amount of arsenic allowed in drinking water. (loe.org)
  • Anyone can be exposed to arsenic since low levels of arsenic are present in soil, water, food, and air. (virginia.gov)
  • People are primarily exposed to arsenic through eating food (fish and shellfish), drinking water, or breathing air containing arsenic. (virginia.gov)
  • If wells are drilled in areas where naturally occurring arsenic is present in the soil or rock, drinking water can become contaminated with arsenic. (virginia.gov)
  • Drinking water contaminated with high levels of arsenic has been associated with increased risk of skin, lung, bladder, and kidney cancer. (virginia.gov)
  • If you live in an area where there are naturally high levels of arsenic in the water or soil, limit your exposure to the soil and consider using municipal or bottled water. (virginia.gov)
  • Reuters Health) - Drinking water that is contaminated with even moderate levels of arsenic may lead to harmful thickening of the heart's main chamber walls, a new U.S. study suggests. (reuters.com)
  • For those with arsenic-contaminated drinking water, Pichler suggests water treatment. (reuters.com)
  • Simple water filters, heating or boiling water do not remove arsenic. (reuters.com)
  • Lead plaintiff Doris Charles claims that the defendants' wines contain "inorganic arsenic in amounts far in excess of what is allowed in drinking water," but do not disclose it to consumers. (courthousenews.com)
  • The U.S. Environmental Protection Agency set a maximum level of arsenic in drinking water at 10 parts per billion. (courthousenews.com)
  • The MDI Biological Laboratory has announced that it is expanding its innovative SEPA (Science Education Partnership Award) program, which aims to improve secondary school education in data literacy while addressing the public health threat posed by arsenic in well water. (news-medical.net)
  • Drinking water that is contaminated with arsenic may lead to thickening of the heart's main pumping chamber in young adults, according to a new study by researchers at Columbia University Mailman School of Public Health. (news-medical.net)
  • In what has been called "the largest mass poisoning of a population in history," some 40 million people in Bangladesh are drinking water that contains unsafe levels of arsenic. (news-medical.net)
  • Drinking water that is contaminated with arsenic may lead to thickening of the heart's main pumping chamber in young adults, a structural change that increases the risk for future heart problems, according to new research in Circulation: Cardiovascular Imaging, an American Heart Association journal. (news-medical.net)
  • There's good news today for parents who give their kids apple juice: The U.S. Food and Drug Administration has announced new draft guidelines that call for no more than 10 parts per billion of inorganic arsenic in apple juice - roughly the same level allowed in tap water. (go.com)
  • In fact, 25 percent of the samples tested had arsenic levels above the EPA limit for safe drinking water. (wired.com)
  • Arsenic polluted water causes death. (hubpages.com)
  • We can also purify arsenic contaminated water in a chemical process. (hubpages.com)
  • Scientists at the University of Stockholm have discovered that Warnstofia fluitans , or floating hook moss, is capable of extracting arsenic from water. (inhabitat.com)
  • Scientists hope to use the breakthrough to develop wetland areas that can filter out arsenic from mining waste to purify water for people, agriculture and animals downstream. (inhabitat.com)
  • It takes no more than an hour to remove 80 per cent of the arsenic from a container of water. (inhabitat.com)
  • By then, the water has reached such a low level of arsenic that it is no longer harmful to people. (inhabitat.com)
  • Arsenic also poses a threat to agriculture , in which crops absorb arsenic-tainted water through their roots. (inhabitat.com)
  • Our aim is that the plant-based wetland system we are developing will filter out the arsenic before the water becomes drinking water and irrigation water. (inhabitat.com)
  • The researchers envision the moss being applied to specific areas through its deliberate cultivation in streams and other bodies of water that pose a high risk of arsenic. (inhabitat.com)
  • Lessons learned in Sweden may then serve other parts of the world that also suffer from arsenic-tainted water. (inhabitat.com)
  • A close-up shot of floating hook moss, which is capable of efficiently removing arsenic from drinking water. (inhabitat.com)
  • IBM is developing a membrane that is more effective at ridding drinking water of arsenic contaminants. (technologyreview.com)
  • In places including Bangladesh, millions must drink water containing arsenic, which can cause neurological problems, organ failure, and death. (technologyreview.com)
  • Making robust water filters that can remove salt and arsenic without requiring a lot of energy has been a challenge. (technologyreview.com)
  • At high pH, arsenic in the water becomes charged, and the fluorine groups on the polymer, which also become charged, then will repel the toxic chemical. (technologyreview.com)
  • Depending on the water sample, says Allen, it removes 96 to 99 percent of arsenic. (technologyreview.com)
  • IBM hopes to test the membranes in Bangladesh, where tens of millions of people drink water contaminated with arsenic. (technologyreview.com)
  • Researchers checked the women's tap water for arsenic. (cbsnews.com)
  • Researchers calculated that women who ate just a half cup of cooked rice each day -- the average amount eaten in the study -- would be getting just as much arsenic as if they drank a liter of tap water at EPA's maximum allowable limit for arsenic. (cbsnews.com)
  • In a statement, the USA Rice Federation says that comparison is misleading because it fails to recognize that the arsenic in water is all inorganic, the toxic form. (cbsnews.com)
  • Here in New Hampshire, where I live, we have natural arsenic in the ground water, and what you see in people who don't test their water and filter out their arsenic, that has translated into a higher-than-average risk of bladder cancer in this state," Punshon tells WebMD. (cbsnews.com)
  • HAMILTON: Benner says the rules of chemistry suggest that any DNA molecule with arsenic in place of phosphorous should fall apart in water in a matter of minutes. (npr.org)
  • The FDA has only set arsenic limits on bottled water. (latimes.com)
  • Brown rice, which tends to be more susceptible to arsenic, should be boiled in large amounts of water, according to the group. (latimes.com)
  • Arsenic does not react with water and is not explosive. (reference.com)
  • The U.S. Food and Drug Administration proposed in 2013 to limit the amount of inorganic arsenic in apple juice to 10 parts per billion, the same level set for water. (cnn.com)
  • After high arsenic reports, Keurig Dr Pepper pulls bottled water sold at Target, Walmart All bottles of unflavored Peñafiel mineral spring water are part of a voluntary withdrawal, Keurig Dr Pepper said in a statement Friday. (usatoday.com)
  • A test found that two bottled water brands that are sold at Whole Foods, Target and Walmart contained high levels of arsenic. (usatoday.com)
  • Keurig Dr Pepper, the company that manufactures Peñafiel water bottles, is voluntarily pulling its bottles after tests found arsenic levels in the product that violate state and federal guidelines. (usatoday.com)
  • However, independent lab tests did detect arsenic in Peñafiel "at levels that exceeded the FDA's bottled water standards for mineral water. (usatoday.com)
  • A sensor that connects to a smartphone could help prevent millions of people from drinking water contaminated by arsenic. (techdigest.tv)
  • Developed by researchers at the University of Edinburgh, the biosensor uses bacteria to detect unsafe arsenic levels in water. (techdigest.tv)
  • Arsenic exists naturally in our environment and can be found in the air we breathe, the water we drink and the ground we walk on. (sgs.com)
  • Most crops absorb arsenic from the soil and water in their environment. (sgs.com)
  • The presence of arsenic in food and water is unavoidable, but food producers should be aware of legislation and the impact of the more toxic inorganic arsenic on raw materials and ingredients. (sgs.com)
  • According to a November 2013 NRC report, foods dominate human arsenic exposures when the levels in drinking water drop below 50 ppb (drinking water drives the exposures when its arsenic content exceeds that amount). (medscape.com)
  • [ 32 ] For perspective, Aaron Barchowsky, a professor of environmental and occupational health at the University of Pittsburgh School of Public Health, says that daily consumption of 3 liters of water at the 10-ppb standard amounts to a 30-μg dose of inorganic arsenic. (medscape.com)
  • HOUSTON, Nov. 9, 2006 -- The discovery of unexpected magnetic interactions between ultrasmall specks of rust is leading scientists at Rice University's Center for Biological and Environmental Nanotechnology (CBEN) to develop a revolutionary, low-cost technology for cleaning arsenic from drinking water. (eurekalert.org)
  • Because iron is well known for its ability to bind arsenic, Colvin's group repeated the experiments in arsenic-contaminated water and found that the particles would reduce the amount of arsenic in contaminated water to levels well below the EPA's threshold for U.S. drinking water. (eurekalert.org)
  • Arsenic is a naturally occurring substance that can be found in air, water, and soil. (cancer.gov)
  • People in the general population may be exposed to arsenic by smoking tobacco, being around tobacco smoke, drinking contaminated water, or eating food from plants that were irrigated with contaminated water. (cancer.gov)
  • Exposure to arsenic in contaminated drinking water is generally thought to be more harmful to human health than exposure to arsenic in contaminated foods. (cancer.gov)
  • Prolonged ingestion of arsenic-containing drinking water is associated with an increased risk of bladder cancer and skin cancer , and medical exposure to arsenic has been clearly associated with skin cancer in epidemiological studies. (cancer.gov)
  • Access to a safe water supply for drinking, food preparation, and irrigation of food crops is the most important way to prevent exposures to arsenic. (cancer.gov)
  • HB 261, signed by Gov. Chris Sununu on July 12, 2019, limits the amount of arsenic - linked to cancer and cognitive impairment - in public drinking water to half the federal limit, or 5 parts per billion (ppb). (unh.edu)
  • In October of 2018, New Hampshire's Department of Environmental Services (NHDES) tapped an interdisciplinary team of UNH researchers to explore the economic benefits of lowering allowable arsenic content in New Hampshire's municipal water systems. (unh.edu)
  • Monitoring and filtering for arsenic has the potential for being expensive, and municipal water associations work hard to keep costs down," says Bob Woodward , the Forrest D. McKerley Professor of Health Economics Emeritus at UNH. (unh.edu)
  • Woodward and collaborators from Paul College, associate professor of economics Robert Mohr , economics lecturer Scott Lemos , and professor of resource economics John Halstead , of COLSA, prepared a report for NHDES that showed New Hampshire residents on municipal water systems would be willing to pay $35 each month to avoid the negative health effects of high arsenic levels in drinking water. (unh.edu)
  • The UNH work showed that New Hampshire residents are willing to pay to reduce their health risk from arsenic in drinking water, and it also highlighted the potential reduction in lifetime earnings associated with a possible reduction in childhood intelligence as a result of exposure to 5 to 10 ppb arsenic in drinking water. (unh.edu)
  • NHDES is grateful to UNH for providing "sound science" on arsenic, says NHDES water division director Thomas E. O'Donovan. (unh.edu)
  • Scientists have discovered ancient bacteria that rely on arsenic, rather than water, to grow during photosynthesis. (webwire.com)
  • Contaminant arsenic(V) has been regarded as one of the top-priority pollutants to remove from water. (environmental-expert.com)
  • In the case of toddler formula, the total arsenic level was six times the amount allowed by the EPA for arsenic in water. (ecochildsplay.com)
  • Since rice is grown in water, it sucks up arsenic in the soil. (ecochildsplay.com)
  • Long term exposure to arsenic in drinking water includes high risk of lung and bladder cancer and increase risk to skin, liver, and kidney cancer. (ecochildsplay.com)
  • and whose private well water was tested within the last 12 months and indicates arsenic levels greater than 10 ug/L may be eligible for the program. (mainehousing.org)
  • Arsenic poisoning is a global problem arising from naturally occurring arsenic in ground water. (wikipedia.org)
  • Shahana Begum, 37, and her son collect arsenic free water from their village pond which has been fitted with a sand filter built with UNICEF support and funding from the UK Department for International Development. (unicef.org)
  • To avoid arsenic, we were using the water from the pond as most tubewell water is contaminated. (unicef.org)
  • A villager pumps water from a pond which has been made free from arsenic by a sand filter. (unicef.org)
  • When we understood that this water would be arsenic free, then we came forward to help build the pond sand filter," said villager Farhad Uddin Chowdhury, who agreed to have one built on his land and to share the water with his neighbours. (unicef.org)
  • On a visit to Bangladesh in 2011-where an estimated 20 million people are exposed to arsenic in local drinking water-scientist Liangjie Dong worked with a team to teach residents how to use a filtration system he designed that could make the water safe. (fastcompany.com)
  • the granules, manufactured from clay, have tiny pores small enough to capture heavy metals like arsenic, lead, or mercury, while letting water through, along with nutrients like calcium and magnesium. (fastcompany.com)
  • In the U.S., where thousands of communities beyond Flint, Michigan, have unsafe levels of lead, and others have high levels of uranium or arsenic, the filters could purify tap water. (fastcompany.com)
  • In this April 5, 2016 photo, a Bangladeshi woman collects arsenic-tainted water from a tube-well in Khirdasdi village, outskirts of Dhaka, Bangladesh. (washingtontimes.com)
  • KHIRDASDI, Bangladesh (AP) - For more than two decades, Nasima Begum and her family have been drawing water from a well painted red to warn Bangladeshi villagers that it's tainted by arsenic. (washingtontimes.com)
  • An estimated 20 million people in Bangladesh are still being poisoned by arsenic-tainted water - a number that has remained unchanged from 10 years ago despite years of action to dig new wells at safer depths, according to a new report released Wednesday by Human Rights Watch. (washingtontimes.com)
  • EWG's Food Scores database attaches "moderate" ingredient concern to arsenic in rice and rice-based processed foods that contain more arsenic in a single serving than is legal in a glass of water. (ewg.org)
  • Heavy metals like arsenic, cadmium and lead are naturally present in water and soil. (ewg.org)
  • Scientists have long known that people who drink arsenic-contaminated water have higher rates of lung, skin and bladder cancers. (ewg.org)
  • Yet in recent years, researchers have developed evidence that most Americans are more exposed to arsenic in their diets than by contaminated water. (ewg.org)
  • Finally, the text includes different cost effective removal mechanisms of arsenic from drinking water using natural red earth, solar oxidation, and arsenic oxidation by ferrrate. (elsevier.com)
  • National Research Council (US) Subcommittee on Arsenic in Drinking Water. (nih.gov)
  • Data on individual consumption require information on the actual amount of water each individual uses for drinking and preparation of foods and beverages, as well as information on the water sources used and the arsenic concentration in each source. (nih.gov)
  • Wong advised people to soak rice in water for at least five minutes before cooking to reduce the level of inorganic arsenic. (atimes.com)
  • We also tested women's home tap water for arsenic, which we combined with tap water consumption to estimate arsenic exposure through water. (pnas.org)
  • Based on total arsenic, consumption of 0.56 cup/d of cooked rice was comparable to drinking 1 L/d of 10 μg As/L water, the current US maximum contaminant limit. (pnas.org)
  • Dhaka, April 6, 2016) - The Bangladesh government is failing to adequately respond to naturally occurring arsenic in drinking water across large areas of rural Bangladesh, Human Rights Watch said in a report released today. (hrw.org)
  • The 111-page report, " Nepotism and Neglect: The Failing Response to Arsenic in the Drinking Water of Bangladesh's Rural Poor ," documents how Bangladesh's health system largely ignores the impact of exposure to arsenic on people's health. (hrw.org)
  • Bangladesh isn't taking basic, obvious steps to get arsenic out of the drinking water of millions of its rural poor," said Richard Pearshouse , senior researcher at Human Rights Watch and author of the report. (hrw.org)
  • Bangladesh isn't taking basic, obvious steps to get arsenic out of the drinking water of millions of its rural poor. (hrw.org)
  • Arsenic is found in water from hand-pumped, mostly shallow, tube wells across huge swaths of rural Bangladesh. (hrw.org)
  • The screening found that wells of an estimated 20 million people yielded water with arsenic above 50 micrograms per liter (the national standard). (hrw.org)
  • Arsenic pentasulfide hydrolyzes in boiling water, giving arsenous acid and sulfur: As2S5 + 6 H2O → 2 H3AsO3 + 2 S + 3 H2S It oxidizes in air at elevated temperatures producing arsenic oxides, the products and yields of which are variable. (wikipedia.org)
  • What is the treatment for elevated arsenic levels? (virginia.gov)
  • The primary treatment for elevated arsenic levels is to reduce or prevent exposure to arsenic. (virginia.gov)
  • New studies contradict existence of arsenic-loving bacteria. (nymag.com)
  • Why a form of bacteria that subsists on arsenic changes everything. (nymag.com)
  • Manufacturers treat wood with arsenic for the same reason you don't want it in food-it kills things, in this case the bacteria, fungi, and insects that would otherwise nibble on the wood. (washingtoncitypaper.com)
  • Nearly two years ago, a team of biologists claimed to have discovered new bacteria that not only could survive in an environment rich in arsenic, it could fold the toxic element into the very heart of its biochemistry - substituting to small extent arsenic for phosphorus - and survive. (go.com)
  • Now, an international team of scientists says it has found that the bacteria - discovered in the arsenic-rich mud of California's Mono Lake - not only have a much stronger preference for phosphorus than arsenic, but they also preferentially cull even tiny amounts of phosphorus from surroundings significantly enriched in arsenic. (go.com)
  • In other words, what may have looked like bacteria thriving on arsenic actually was bacteria efficient at feeding on the relatively low levels of phosphorus. (go.com)
  • The results represent the "nail in the coffin" for the idea that these bacteria can incorporate arsenic into their proteins, enzymes, and even into their DNA as a phosphate stand-in, as the initial study claimed, according to Dan Twafik, a researcher at the Wiezmann Institute of Science in Israel in an interview with the journal Nature. (go.com)
  • In essence, the teams concluded that the bacteria, prosaically dubbed GFAJ-1, had adapted well to living in a high-arsenic environment, but that the organisms still depended on phosphates to survive. (go.com)
  • Indeed, the original work revealed arsenic in the cells, adds colleague John Trainer, with the Scripps Research Institute in La Jolla, Calif., and the new work doesn't rule out its migration into the bacteria, "so microbes evidently have multiple levels of adaptation to arsenic. (go.com)
  • The team now is focusing its efforts on how the bacteria accommodate arsenic in their cells and live to tell the tale. (go.com)
  • A new paper had just been published in the journal Science , they said, which described bacteria that seemed able to build their own DNA from arsenic. (slate.com)
  • Rumors circulated that a number of scientists had sent in formal criticisms (known in the business as "technical comments"), arguing that the study hadn't come close to demonstrating that the bacteria were growing on arsenic. (slate.com)
  • They 'clearly show' that the bacteria can't use arsenic as the researchers claimed, said an accompanying statement from the journal. (slashdot.org)
  • On the minus side, arsenic-crazed bacteria are a rather cool theory to have dashed against the rocks of callous empiricism. (slashdot.org)
  • Arsenic is a natural element found in soil and minerals. (medlineplus.gov)
  • Of all the commercially grown grains, the rice plant is best designed to uptake arsenic - a widespread and naturally occurring element - from the soil, using the same mechanisms that allow it to store minerals like silicon that help strengthen the rice grains. (wired.com)
  • Inorganic arsenic occurs naturally in soil and in many kinds of rock. (cdc.gov)
  • Arsenic contained in wind-borne soil is generally found in larger particles. (cdc.gov)
  • Soil contains average levels of about 5,000 parts of arsenic per billion parts of soil (ppb). (virginia.gov)
  • CRYSTAL RIVER -- City officials said Friday they will commission soil tests to determine how much arsenic is leaching from its playground as well as other structures built with pressure-treated wood. (sptimes.com)
  • A Tampa laboratory hired by the Times found soil at each of the five randomly selected playgrounds contained arsenic at levels higher than the state considers safe. (sptimes.com)
  • The exact health risk of arsenic-tainted soil is unclear though some experts say the risk of a child getting cancer is remote. (sptimes.com)
  • Arsenic is naturally occurring in the soil. (ecochildsplay.com)
  • Arsenic remains in the soil. (ecochildsplay.com)
  • Researchers who analyzed arsenic levels from more than 1,000 adults under the age of 50 found the risk of heart thickening over the next roughly five years was significantly higher in those with the highest exposure to the toxin, according to the report published in Circulation. (reuters.com)
  • I t is possible that British author Jane Austen - writer of novels such as Pride and Prejudice and Sense and Sensibility - developed cataracts and died because of arsenic poisoning, researchers at The British Library have said. (telegraph.co.uk)
  • On the whole, about 530 baby food products were tested and researchers found 65% of products tested positive for arsenic. (mercurynews.com)
  • Researchers at the National Institutes of Health have discovered how exposure to arsenic can turn normal stem cells into cancer stem cells and spur tumor growth. (nih.gov)
  • This reveals a potentially important aspect of arsenic carcinogenesis and may help explain observances by researchers working with arsenic that arsenic often causes multiple tumors of many types to form on the skin or inside the body. (nih.gov)
  • The IBM researchers have made a new membrane material that resists these problems while also screening out arsenic. (technologyreview.com)
  • The move Friday is based on a Consumer Reports finding this week urging consumers to cut back on rice ingestion after researchers said they discovered "worrisome" traces of inorganic arsenic in products including brown and white rice and rice-based infant cereals, pastas, drinks and crackers. (latimes.com)
  • To find out how much arsenic could end up in your salad bowl via CCA-laden garden borders, University of Minnesota researchers tested carrots, spinach, bush beans, and buckwheat grown in raised beds built with CCA-treated wood. (washingtoncitypaper.com)
  • In their worst-case scenario, the Minnesota researchers found that a 132-pound person who ate seven ounces of spinach would narrowly exceed the daily arsenic limit established by the Environmental Protection Agency. (washingtoncitypaper.com)
  • Colvin's group has been collaborating with researchers from Rice Professor Mason Tomson's group in civil and environmental engineering to further develop the technology for arsenic remediation. (eurekalert.org)
  • Last year, researchers in Sweden reported finding elevated levels of arsenic and other heavy metals in rice cereals, which parents often use to transition children to solid foods. (webmd.com)
  • Researchers say they are glad the FDA is stepping up its scrutiny of arsenic in foods. (webmd.com)
  • For the study, which is published in the journal Environmental Health Perspectives , researchers analyzed arsenic levels in 17 different brands of formula made for infants and toddlers. (webmd.com)
  • Arsenic is a naturally occurring element widely distributed in the earth's crust. (cdc.gov)
  • Arsenic is distributed in the Earth's crust, released from volcanoes and from erosion of mineral deposits, as well as through mining, pesticides and the burning of coal, oil, gasoline and wood, according to the FDA. (latimes.com)
  • Another lab didn't find any evidence that arsenic was replacing phosphorous in the biochemistry of the organism. (popularmechanics.com)
  • Although there is no good evidence that arsenic can harm pregnant women or their fetuses, studies in animals show that doses of arsenic that are large enough to cause illness in pregnant females may cause low birth weight, fetal malformations, or fetal death. (virginia.gov)
  • The evidence that arsenic may be a beneficial nutrient at trace levels below the background to which living organisms are normally exposed has been reviewed. (wikipedia.org)
  • Although phosphate and arsenate are structurally similar, there is no evidence that arsenic replaces phosphorus in DNA or RNA . (wikipedia.org)
  • In a neatly choreographed response, the FDA promptly released its own sample results from - yes - some 200 rice products which turned up a comparable amount of inorganic arsenic in the selected foods, which ranged from baby cereal to rice cakes to bagged rice. (wired.com)
  • Rep. Rosa DeLauro (D-CT) introduced a bill in Congress on Thursday which would limit the amount of inorganic arsenic permitted in rice and rice-based foods. (foodsafetynews.com)
  • Exposure to high levels of arsenic can cause death. (medlineplus.gov)
  • In high levels, arsenic may cause lung cancer or even death. (in.gov)
  • Exposure to higher than average levels of arsenic occur mostly in the workplace, near hazardous waste sites, or in areas with high natural levels. (cdc.gov)
  • At high levels, inorganic arsenic can cause death. (cdc.gov)
  • Living in areas with unusually high natural levels of arsenic in rock. (cdc.gov)
  • Breathing high levels of inorganic arsenic can give you a sore throat or irritated lungs. (cdc.gov)
  • Ingesting very high levels of arsenic can result in death. (cdc.gov)
  • The lawsuit says the wineries "produce and market wines that contain dangerously high levels of inorganic arsenic, in some cases up to 500 percent or more than what is considered the maximum acceptable safe daily intake limit. (courant.com)
  • And a lot of them drink at least 16 ounces a day, potentially exposing them to high levels of arsenic. (webmd.com)
  • Breathing high levels of inorganic arsenic may cause a sore throat, lung irritation, and some of the mentioned skin effects. (virginia.gov)
  • Tests on hair and fingernails can measure exposure to high levels of arsenic over the past 6-12 months. (virginia.gov)
  • LONDON -- Scientists have found high levels of arsenic in the hair of King George III and say the deadly poison may be to blame for the bouts of apparent madness he suffered. (redorbit.com)
  • What surprised us was there were very high levels of arsenic. (redorbit.com)
  • Although some apple juices have tested high for arsenic , all 95 samples tested by the FDA already fell within the 10 ppb - reassurance that when it comes to arsenic levels, apple juice is safe. (go.com)
  • Prompted by the debate, Consumer Reports did its own study and in late November confirmed what Dr. Oz had found - that arsenic levels in apple juice were over all too high. (wired.com)
  • Our experiments show that the moss has a very high capacity to remove arsenic," said research assistant and study co-author Arifin Sandhi . (inhabitat.com)
  • Studies have linked high arsenic levels in pregnant women to an increased risk of miscarriage . (cbsnews.com)
  • The trio of legislators this year introduced another bill to set a threshold on arsenic and lead in fruit juices after a similar Consumer Reports study found high levels of the elements in grape and apple beverages. (latimes.com)
  • It came back with a high level of arsenic. (nytimes.com)
  • Brown rice especially, contains high levels of arsenic, particularly in its inorganic forms. (sgs.com)
  • In some cases, agricultural soils are naturally high in arsenic, but arsenical herbicides also can leave residues that accumulate in crops. (medscape.com)
  • In addition, developmental defects, stillbirth, and spontaneous abortion as well as heart attacks, strokes, diabetes mellitus, and high blood pressure have been associated with long term arsenic exposure. (ecochildsplay.com)
  • Thanks for sharing this about the high levels of arsenic in various rice products. (ecochildsplay.com)
  • High levels of arsenic in the tubewells are a serious concern for the 550,000 people living in this area east of Dhaka. (unicef.org)
  • The FDA is weighing a limit for arsenic in fruit juice after recent tests turned up high levels in some brands of apple juice. (webmd.com)
  • But the rice syrups themselves, and products that listed rice syrups or rice as one of the first five ingredients, all had high arsenic levels. (webmd.com)
  • It has sometimes detected high levels of arsenic, cadmium, and lead in fruits, vegetables and grains. (ewg.org)
  • Agricultural scientists have bred some varieties of rice to thrive in soils that are high in arsenic. (ewg.org)
  • High levels of inorganic arsenic were found in 13 out of 45 rice samples obtained in Hong Kong and Lo Wu. (atimes.com)
  • Rain and snow remove arsenic dust particles from the air. (cdc.gov)
  • In 2003, U.S. manufacturers of wood preservatives containing arsenic began a voluntary transition from CCA to other wood preservatives that do not contain arsenic for certain residential uses, such as play structures, picnic tables, decks, fencing, and boardwalks. (cdc.gov)
  • Although several wood treatments contain arsenic, the compound of greatest concern is chromated copper arsenate (CCA), a trifecta of dangerous chemicals that at one time (like 1990) was used on almost all the pressure-treated lumber in the United States. (washingtoncitypaper.com)
  • CURWOOD: What kind of sources of so-called natural arsenic should people be concerned about? (loe.org)
  • Because arsenic-based pesticides were commonly used in U.S. agricultural production up until 1970, trace levels of arsenic can be detected in some agricultural settings, which could lead to small amounts of arsenic in certain foods and beverages, including apples, according to the FDA. (cnn.com)
  • In the past, people were exposed to arsenic during certain medical treatments and through contact with pesticides. (cancer.gov)
  • Eighty percent of rice grown in the United States comes from the South where arsenic pesticides were used. (ecochildsplay.com)
  • Arsenobetaine , one of the most common arsenic compound in nature. (wikipedia.org)
  • The three most common arsenic allotropes are gray, yellow, and black arsenic, with gray being the most common. (wikipedia.org)
  • Hopefully some sort of selective breeding experiment can succeed where nature has failed, and give us an organism that substitutes some or all of its phosphorus for arsenic. (slashdot.org)
  • You would have a way to use arsenic in the place of phosphorus -- not just in some chemical reactions, but in your very DNA, the instructions for living. (planetary.org)
  • Felisa Wolfe-Simon, a NASA Astrobiology Research Fellow, and her colleagues have found that a bacterium from the Halomonadace ae family of proteobacteria is able to completely swap arsenic for phosphorus. (planetary.org)
  • Note that arsenic is immediately below phosphorus on the Periodic Table of the Elements. (planetary.org)
  • Black arsenic is similar in structure to black phosphorus. (wikipedia.org)
  • Arsenic has a similar electronegativity and ionization energies to its lighter congener phosphorus and accordingly readily forms covalent molecules with most of the nonmetals. (wikipedia.org)
  • Arsenic and Rice. (wired.com)
  • scientists have been publishing studies on arsenic in rice for more than a decade. (wired.com)
  • It's not surprising that Consumer Reports found that inorganic arsenic levels in rice cereals were 'at least five times more than has been found in alternatives such as oatmeal. (wired.com)
  • As the magazine also notes, 'White rice grown in Arkansas, Louisiana, Missouri and Texas, which accounts for 76 percent of domestic rice, generally had higher levels of total arsenic and inorganic arsenic in our tests than rice samples from elsewhere. (wired.com)
  • Third, although Southern states produce primarily white rice, recent testing found that arsenic levels overall tend to be higher in brown rice species. (wired.com)
  • Finally - and this is where the FDA has left all of us hanging - do the levels of inorganic arsenic found in rice pose an actual health threat? (wired.com)
  • But in addition to its nutrient and caloric content, rice can contain small amounts of arsenic, which in large doses is a toxin linked to multiple health conditions and dietary-related cancers. (news-medical.net)
  • Arsenic pollution spreads in paddy, rice wheat, vegetables and medicine. (hubpages.com)
  • On the heels of new revelations about arsenic in grape and apple juice, a new study shows that rice may be a significant source of arsenic in the diets of pregnant women. (cbsnews.com)
  • Each gram of rice the women ate was associated with a 1% increase in their arsenic levels. (cbsnews.com)
  • Our findings, along with those of other studies, highlight the need to regulate arsenic in food and in rice," Karagas says. (cbsnews.com)
  • We don't want to stop people from eating rice, because a rice-based, sort-of Asian diet is much better for your overall health than, say, eating McDonald's and fries every day," says Punshon, who has tested different varieties of rice for arsenic. (cbsnews.com)
  • Rice grown in the United States, for example, has been shown to have higher arsenic levels than jasmine or basmati rice grown in Thailand or India. (cbsnews.com)
  • Three U.S. House Democrats say their so-called R.I.C.E. Act would require the FDA to set a maximum amount of arsenic permissible in foods containing rice. (latimes.com)
  • In response to a recent investigation that found "substantial" levels of arsenic in rice and many rice-based products, a group of Democrats proposed legislation that would impose federal limits on the dangerous element. (latimes.com)
  • Reps. Rosa De Lauro of Connecticut, Frank Pallone of New Jersey and Nita Lowey of New York said in a joint statement that their bill would require the Food and Drug Administration to set a maximum amount of arsenic permissible in foods containing rice. (latimes.com)
  • South Korea will temporarily stop imports and sales of American rice as it conducts tests on arsenic levels, the agriculture ministry said in a statement. (latimes.com)
  • In the same notice, the government said the rice in question was the medium-grain variety from California and that the likelihood that it contained arsenic was low. (latimes.com)
  • The agency said it was analyzing about 1,200 rice products for arsenic content and has monitored the issue for decades. (latimes.com)
  • Rice contains 'worrisome' arsenic levels, says Consumer. (latimes.com)
  • Because rice takes up arsenic more readily than other grains, the U.S. Food and Drug Administration is looking at the effects of long-term exposure to very low amounts of arsenic in rice and rice products. (cnn.com)
  • In April, the FDA proposed a limit of 100 parts per billion of inorganic arsenic in infant rice cereal. (cnn.com)
  • As part of its comprehensive look at rice in 2012, the FDA tested not only rice for arsenic levels, but also products containing rice. (cnn.com)
  • However rice, which grows in flooded conditions, absorbs and stores arsenic more readily. (sgs.com)
  • European authorities have adopted EFSA's 2009 report and maximum limits for inorganic arsenic are planned to be introduced for rice and rice-based infant food. (sgs.com)
  • The proposed standard of 10 ppb in apple juice was a first step in this direction, but advocates with CU say the agency should go further by imposing a 120-ppb standard for inorganic arsenic in rice. (medscape.com)
  • [ 31 ] (Arsenic tends to accumulate in the aleurone layer of the rice grain, which gives brown rice its color. (medscape.com)
  • In a 6 September 2013 statement, the FDA said the amount of detectable arsenic in the sampled rice and rice products was too low to cause "any immediate or short-term adverse health effects. (medscape.com)
  • The FDA is now performing a draft risk assessment for arsenic in rice, which agency officials say could guide further actions. (medscape.com)
  • Those wishing to comment on draft guidance for industry on inorganic arsenic levels in rice cereals for infants have 14 more days to do so. (foodsafetynews.com)
  • Having documenting that many rice cereals for infants and toddles have significant levels of inorganic arsenic - which can cause neurologic and developmental problems - the government is proposing a maximum allowable limit for the substance. (foodsafetynews.com)
  • It was just another disturbing study pointing to the rice and arsenic connection in which US and EU guidelines have not been established. (ecochildsplay.com)
  • The balance of rice grown in the United States comes from California, where arsenic is more prevalent due to its geochemical profile . (ecochildsplay.com)
  • In 2009, the UK Food Safety Standards warned parent as a precaution to stop giving children ages 1 to 4.5 years old rice drinks due to an arsenic/rice milk study. (ecochildsplay.com)
  • For five years or possibly more, there hasn't been any US or European Union guidelines on the amount of arsenic allowable in rice. (ecochildsplay.com)
  • Alternatively, Dr. Meharg suggested " selectively breeding arsenic-poor rice varieties. (ecochildsplay.com)
  • I wasn't waiting and started a petition at Change.org asking the FDA and the EU to limit the amount of arsenic in rice. (ecochildsplay.com)
  • I'm curious to know if any arsenic studies have been done on imported rice (e.g., from Thailand, Philippines and Japan). (ecochildsplay.com)
  • It's not the first time arsenic has turned up in rice-based foods for infants and toddlers . (webmd.com)
  • The agency confirms that it has recently tested rice products for arsenic. (webmd.com)
  • We need to elevate the discussion about whether we do need regulations and guidelines for arsenic in food," says researcher Brian P. Jackson, PhD, director of trace metal analysis at Dartmouth College in Hanover, N.H. "And rice-based foods would be the first foods we should look at, I think. (webmd.com)
  • Products that didn't list rice or rice syrups as top ingredients were all low in arsenic. (webmd.com)
  • Arsenic Is In Rice - Should you worry? (ewg.org)
  • That's why EWG's Food Scores flags arsenic as a "concern" in rice-based products. (ewg.org)
  • The bottom line: EWG recommends that you limit consumption of rice and rice-based food when possible and instead eat a varied diet of healthy lower-arsenic grains and sweeteners. (ewg.org)
  • The scientific findings about arsenic in rice pose a dilemma for consumers, food companies and regulators. (ewg.org)
  • Arsenic levels are consistently elevated in rice and foods made with rice flour, bran and rice-based sweeteners. (ewg.org)
  • Many authorities single out rice as a special problem because of its propensity to harbor arsenic. (ewg.org)
  • While all plants can absorb some arsenic, rice plants, due to their physiology and growing conditions, accumulate 10 times more arsenic than other grain crops (Sohn 2014). (ewg.org)
  • Emerging data indicate that rice consumption may lead to potentially harmful arsenic exposure. (pnas.org)
  • Here we document a positive association between rice consumption and urinary arsenic excretion, a biomarker of recent arsenic exposure, in 229 pregnant women. (pnas.org)
  • Rice arsenic content and speciation also vary, with some strains predominated by dimethylarsinic acid, particularly those grown in the United States. (pnas.org)
  • Our findings along with others indicate that rice consumption should be considered when designing arsenic reduction strategies in the United States. (pnas.org)
  • Those total arsenic levels are well below the FDA's current "level of concern" that prompts further tests. (webmd.com)
  • for example, more than 95 percent of total arsenic levels in a set of 94 apple juice samples collected at retail as part of a fiscal year 2011 assignment were below 10 ppb (see Ref. 6 and Section V below). (fda.gov)
  • The remaining four samples in that assignment with total arsenic levels above 10 ppb had inorganic arsenic levels below 10 ppb. (fda.gov)
  • Small amounts of arsenic also may be released into the atmosphere from coal-fired power plants and incinerators because coal and waste products often contain some arsenic. (cdc.gov)
  • Toxicologists at Dartmouth College have discovered tiny amounts of arsenic disrupt the functioning of hormones with a mechanism never noted before. (loe.org)
  • For example, the mold Scopulariopsis brevicaulis produces significant amounts of trimethylarsine if inorganic arsenic is present. (wikipedia.org)
  • Inorganic arsenic occurs naturally in certain types of soils and rock formations. (virginia.gov)
  • When in the natural environment, arsenic usually binds to other molecules, such as those found in soils, and does not tend to travel very far. (webwire.com)
  • The average concentration of arsenic in soils in the United States varies considerably. (webwire.com)
  • Arsenic is harmful to the production of blood cells and may cause abnormal heart rhythm. (in.gov)
  • Once in blood, the liver changes much of the arsenic into less harmful forms. (virginia.gov)
  • In low doses, arsenic is not harmful to humans. (sgs.com)
  • Arsenic is infamous for its harmful properties. (medicalnewstoday.com)
  • Studies in animals show that large doses of arsenic that cause illness in pregnant females, can also cause low birth weight, fetal malformations, and even fetal death. (cdc.gov)
  • The plaintiffs claim that some of the wines they tested had five times more arsenic than that. (courthousenews.com)
  • The study found that the formulas in which the syrup was a primary ingredient contained 20 times more arsenic than the other formulas. (cnn.com)
  • The team found that the presence of arsenic weakened and distorted the hitch, while phosphates didn't. (go.com)
  • Families may be concerned about testing their children for the presence of arsenic or lead in their blood. (kingcounty.gov)
  • More than 60 percent of the wells in this subdistrict are contaminated with arsenic and unsafe to drink from,' explains Sayed Ershad, a development worker who has spent the last several years grappling with the disaster. (worldwatch.org)
  • LOS ANGELES (CN) - More than two dozen cheap California wines have unsafe levels of arsenic, consumers claim in a class action in Superior Court. (courthousenews.com)
  • The actual amount of arsenic in play here is minute-just 92 micrograms in the Minnesota example-and let's face it, even for greens lovers, a half to three-quarters of a pound is some serious spinach. (washingtoncitypaper.com)
  • All samples passed the local's food safety center limit of 1,100 micrograms of inorganic arsenic per kilogram. (atimes.com)
  • The World Health Organization says a 60-kilogram adult should not have more than 180 micrograms of inorganic arsenic a day. (atimes.com)
  • The 10 micrograms/kilogram (µg/kg) or 10 parts per billion (ppb) action level for inorganic arsenic in apple juice is identified in the FDA Guidance for Industry entitled "Arsenic in Apple Juice: Action Level. (fda.gov)
  • Probably not, but a new Food and Drug Administration study has found arsenic in chickens treated with 3-Nitro® (also known as Roxarsone), a commonly used, arsenic-based animal drug. (ewg.org)
  • While the city does not plan to close the playground behind City Hall, it may post notices that pressure-treated wood contains arsenic, a fact many people do not know. (sptimes.com)
  • Arsenic pentasulfide is an inorganic compound contains arsenic and sulfur. (wikipedia.org)
  • Arsenic occurs naturally as a trace component in many rocks and sediments. (usgs.gov)
  • Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. (wikipedia.org)
  • However, arsenic poisoning occurs in multicellular life if quantities are larger than needed. (wikipedia.org)
  • Arsenic occurs in nature as a monoisotopic element, composed of one stable isotope, 75As. (wikipedia.org)
  • Symptoms of acute poisoning from swallowing arsenic include nausea, vomiting , burning of the mouth and throat, and severe abdominal pains. (britannica.com)
  • The treatment of acute arsenic poisoning involves washing out the stomach and the prompt administration of dimercaprol (BAL). (britannica.com)
  • A resurgence of interest in arsenic as a medicinal agent for the treatment of acute promyelocytic leukemias, multiple myeloma, myelodysplastic syndromes, and assorted resistant solid tumors may potentially contribute to increases in arsenic exposure. (medscape.com)
  • Blood levels of arsenic have a short half-life and are useful only for monitoring recent or acute exposure. (labcorp.com)
  • Acute arsenic intoxication. (labcorp.com)
  • Breathing sawdust or burning smoke from wood treated with arsenic. (cdc.gov)
  • Other sources of exposure are breathing in sawdust or burning smoke from arsenic-treated wood, living near hazardous waste sites, and living in areas with naturally elevated levels of arsenic in rock. (virginia.gov)
  • Arsenic is very poisonous white compound of element. (hubpages.com)
  • A new arsenic nanoparticle -- designed to slip undetected through the bloodstream until it arrives at the tumor and delivers its poisonous cargo -- solved all that. (northwestern.edu)
  • Several studies have shown that ingestion of inorganic arsenic can increase the risk of skin cancer and cancer in the liver, bladder, and lungs. (cdc.gov)
  • Arsenic poisoning in humans most often results from the ingestion or inhalation of insecticides containing arsenious oxide, copper acetoarsenite, or calcium or lead arsenate. (britannica.com)
  • Arsenic enters the body through inhalation or ingestion. (virginia.gov)
  • Long-term ingestion of inorganic arsenic can cause darkening of the skin and the appearance of small corns or warts on the palms, soles, and torso. (virginia.gov)
  • Inorganic arsenic exposure in humans, by the inhalation route, has been shown to be strongly associated with lung cancer, while ingestion of inorganic arsenic in humans has been linked to a form of skin cancer and also to bladder, liver, and lung cancer. (environmental-expert.com)
  • The Centers for Disease Control and Prevention (CDC) established the proficiency in arsenic speciation program to help laboratories worldwide assess the accuracy of their arsenic analysis and provide them with technical support. (cdc.gov)
  • Skin contact with inorganic arsenic may cause redness and swelling. (cdc.gov)
  • To add insult to injury, about 60% of products claiming to be "BPA free" tested positive for the industrial chemical bisphenol A. It should be noted that the quantities can range from large to small, but some products tested positive for up to 600 parts of arsenic per billion. (mercurynews.com)