OrganismsChemicals and DrugsAnthropology, Education, Sociology and Social PhenomenaHumanitiesHealth Care
ChlorophenolsChlorinePhenolPentachlorophenolChlorine Compounds2,4,5-Trichlorophenoxyacetic Acid2-Methyl-4-chlorophenoxyacetic AcidPhenolsGlycolatesHerbicidesDioxinsDesulfitobacteriumChlorobenzoatesBiodegradation, EnvironmentalWater PurificationFungicides, IndustrialQuality of LifeWater Pollutants, ChemicalCyclodextrinsDisinfectantsbeta-Cyclodextrins
AtomsAromatic compoundsContaminantsPesticidesFluorideIdentifiesDrinking waterDetectionCompoundsAbsorptionHydrocarbonsToxic chemicalsAssaySynthesisSubstancesPollutionOrganicGroundwaterEnvironmentalBiologicalEvaluateHealthFoundTimeLaboratoryLevelsLongSubstanceLeadProceduresPhysical or chemicalLaboratoriesFormulaSolidLowerElements
Atoms7
  • The CDD family is divided into eight groups of chemicals based on the number of chlorine atoms in The Environmental Protection Agency (EPA) the compound. (cdc.gov)
  • As more sites are evaluated, the The chlorine atoms can be attached to the dioxin number of sites with CDDs may increase. (cdc.gov)
  • The name of important because exposure to these substances may each CDD indicates both the number and the harm you and because these sites may be sources of positions of the chlorine atoms. (cdc.gov)
  • Phenols substituted with one or more chlorine atoms in any position. (lookformedical.com)
  • A group of chemicals (also known as paraffins or aliphatic hydrocarbons) for which the carbon atoms are all linked by single covalent bonds. (itrcweb.org)
  • A group of chemicals (also known as paraffins or aliphatic hydrocarbons) for which the carbon atoms contain at least one double bond. (itrcweb.org)
  • The chemical formula identifies each constituent element by its chemical symbol and indicates the number of atoms of each element found in each discrete molecule of that compound. (niir.org)
Aromatic compounds1
  • The manufacture of other chlorinated aromatic compounds can produce chlorophenols as byproducts. (cdc.gov)
Contaminants5
  • Standard 53 addresses point-of-use (POU) and point-of-entry (POE) systems designed to reduce specific health-related contaminants, such as Cryptosporidium, Giardia, lead, volatile organic chemicals (VOCs) , MTBE (methyl tertiary-butyl ether), that may be present in public or private drinking water. (h2odistributors.com)
  • This study on the ecotoxicological and chemical behavior of quinolones in two cladoceran species fills a data gap about how these emerging contaminants affect nontarget aquatic organisms and how long they persist in the environment. (bvsalud.org)
  • 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. (lookformedical.com)
  • Reverse osmosis water filters remove a wide range of contaminants and minerals from your drinking water, including sand, chlorine , fluoride , cryptosporidium , and hexavalent chromium . (everpurefilter.com)
  • Not all contaminants that were tested had established NSF protocols at the time testing was performed. (clearlyfiltered.com)
Pesticides3
  • The sources of human exposure to these phenolic compounds include industrial pollution, pesticides, food, and drinking water. (cdc.gov)
  • Chlorophenols have been used in the wood preservation industry, as intermediates in the production of pesticides, and as disinfectants or fungicides for industrial and indoor home use. (cdc.gov)
  • Furthermore, the rise in industrial activities, especially those that use secondary compounds and high amounts of water in their processes, has increased the concentration in water sources of pollutants, such as metals, radioactive materials, halogenated compounds, persistent organic pollutants, and bioaccumulative and toxic chemicals, such as pesticides. (ncsu.edu)
Fluoride1
  • Fluoride is a chemical compound added to 75% of tap water supplies in the U.S. on the pretext of promoting dental health. (clearlyfiltered.com)
Identifies1
  • The group with one chlorine atom is identifies the most serious hazardous waste sites in called the mono-chlorinated dioxin(s). (cdc.gov)
Drinking water4
  • Clorophenols are also by-products of waste water and municipal drinking water disinfection with chlorine. (cdc.gov)
  • Although they may still be used in production of certain fungicides, these chemicals are no longer commercially manufactured but may occur in small amounts in chlorinated drinking water, and they may be produced during combustion of natural materials or detected in chlorinated waste water. (cdc.gov)
  • Thus, there are numerous sources for human exposure to these chlorophenols, encompassing food, drinking water, pesticide use, and contact with contaminated or treated materials. (cdc.gov)
  • The World Health Organization (WHO) has provided recommendations for the levels of each contaminant, and these can be found in the Guidelines for Drinking-water Quality, 2011 (World Health Organization 2014). (ncsu.edu)
Detection1
  • The method uses solid phase extraction (SPE) coupled on-line to HPLC and tandem mass spectrometry (MS/MS). With the use of isotopically labeled internal standards, the detection limits in 100 μL of urine are 0.1-2 nanograms per milliliter (ng/mL), sufficient for measuring urinary levels of phenols in non-occupationally exposed subjects. (cdc.gov)
Compounds1
Absorption1
  • The total amount of a chemical, metal or radioactive substance present at any time after absorption in the body of man or animal. (lookformedical.com)
Hydrocarbons2
  • A chemical by-product that results from burning or incinerating chlorinated industrial chemicals and other hydrocarbons. (lookformedical.com)
  • AH receptors are identified by their high-affinity binding to several carcinogenic or teratogenic environmental chemicals including polycyclic aromatic hydrocarbons found in cigarette smoke and smog, heterocyclic amines found in cooked foods, and halogenated hydrocarbons including dioxins and polychlorinated biphenyls. (lookformedical.com)
Toxic chemicals1
  • 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. (lookformedical.com)
Assay1
  • C. dubia surviving the chronic exposure assay was monitored in recovery assays free of quinolones. (bvsalud.org)
Synthesis1
  • 2,5-Dichlorophenol is a metabolite of 1,4-dichlorobenzene and has industrial uses including dye and chemical synthesis and resin production. (cdc.gov)
Substances1
  • These discharged substances from industries contaminate waters, and the increase of normal concentrations of microorganism had raised concerns, leading to the generation of regulations that would enhance public health and improve water quality. (ncsu.edu)
Pollution1
  • As water quality is a global concern, the use of natural and sustainable materials is fundamental to obtain high value products that can remediate water systems without generating other pollution sources or require extra energy inputs or high side costs. (ncsu.edu)
Organic2
  • Volatile organic chemicals ability to cause these symptoms varies widely from highly toxic to no known effects, and severity of symptoms also varies with length and level of exposure. (h2odistributors.com)
  • Organic chemicals are now listed alphabetically, without categorization. (pdfslide.net)
Groundwater2
  • The rate or movement of chemical or biological materials within a groundwater system per unit time in response to a concentration gradient or some advective force. (itrcweb.org)
  • Preference for surface water and groundwater benchmarks is given to U.S. EPA Ambient Water Quality Criteria (AWQC). (pdfslide.net)
Environmental2
  • Biomonitoring of urinary environmental phenols is used to determine prevalence of human exposure and the relevance of human exposure in public health. (cdc.gov)
  • Vials are stored under appropriate frozen (-20°C) conditions until they are shipped to National Center for Environmental Health for testing. (cdc.gov)
Biological1
  • Bulk transport of the mass of discrete chemical or biological constituents by fluid flow within a receiving water. (itrcweb.org)
Evaluate2
  • NCHS and contract consultants use a structured quality assurance evaluation during unscheduled visits to evaluate both the quality of the laboratory work and the quality-control procedures. (cdc.gov)
  • Testing of this filter system was performed by QFT, a division of IAPMO, an independent laboratory certified by NSF to evaluate water filter performance. (clearlyfiltered.com)
Health2
  • What are the Health Effects of VOC Exposure? (h2odistributors.com)
  • Individuals with unknown water quality should follow the advice of local health authorities with regards to water treatment. (clearlyfiltered.com)
Found1
Time4
  • The concentration of chlorine recommended by the WHO (≥ 0.5 mg L-1 after at least 30 min of contact time at pH 8.0) successfully removed SARS-CoV-2 RNA from DWW. (bvsalud.org)
  • Flow rate is how fast the water is moving through the system, a faster flow rate reduces exposure time and therefor the effectiveness. (h2odistributors.com)
  • Any poisonous effect produced within a short period of time following an exposure, usually 24 to 96 hours (USEPA 2013). (itrcweb.org)
  • Formulation is a key process in the overall life cycle so that products are delivered that is of the right quality, at a competitive cost, and is made available within the specified time scale. (niir.org)
Laboratory1
Levels1
  • All of our products have been independently tested and verified by EPA-accredited laboratories at levels exceeding NSF standards whenever the standards are applicable. (clearlyfiltered.com)
Long1
  • The effects of exposure to any hazardous long), and how you come in contact with it. (cdc.gov)
Substance1
  • You substance depend on the dose, the duration, how must also consider the other chemicals you're you are exposed, personal traits and habits, and exposed to and your age, sex, diet, family traits, whether other chemicals are present. (cdc.gov)
Lead1
  • release does not always lead to exposure. (cdc.gov)
Procedures1
  • testing procedures and constructive feedback are given to each staff. (cdc.gov)
Physical or chemical2
  • 32. Spot Sampling for physical or Chemical parameters. (lawnigeria.com)
  • 33. Composite sampling for physical or chemical parameters. (lawnigeria.com)
Laboratories3
  • NHANES uses several methods to monitor the quality of the analyses performed by the contract laboratories. (cdc.gov)
  • In addition, contract laboratories randomly perform repeat testing on 2.0% of all specimens. (cdc.gov)
  • NCHS developed and distributed a quality control protocol for all the contract laboratories which outlined the Westgard rules used when running NHANES specimens. (cdc.gov)
Formula2
  • In science, a specific formula is a concise way of expressing information symbolically as in a mathematical or chemical formula. (niir.org)
  • Bicarbonate of soda (also known as sodium bicarbonate or sodium hydrogen carbonate) is a white powder with the chemical formula NaHCO3 and it is used as cleaning agent. (oenopedia.com)
Solid1
  • Non-covalent bonding of a chemical to a solid surface. (itrcweb.org)
Lower1
  • It is also produced by B. Bruxellensis but its content is generally 8 times lower than that of 4-ethyl-phenol. (oenopedia.com)
Elements1
  • If a molecule contains more than one atom of a particular element, this quantity is indicated using a subscript after the chemical symbol and also can be combined by more chemical elements. (niir.org)