Mixture biphenyl compounds. Medical search. Frequent questions

2018. Utilizing ion mobility spectrometry and mass spectrometry for the analysis of polycyclic aromatic hydrocarbons, polychlorinated biphenyls, polybrominated diphenyl ethers and their metabolites. (nih.gov)
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)
Killifish inhabit urbanized environments that are polluted by mixtures of chemicals including polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs). (hhs.gov)
This view is supported by research demonstrating that they contain toxic chemicals within their structure and also adsorb additional chemicals, including polychlorinated biphenyls (PCBs), pesticides, metals, and polycyclic aromatic hydrocarbons (PAHs), from the environment. (researchgate.net)
In the present work the simultaneous extraction for the multiresidue determination in wastewater samples of organic compounds such as polychlorinated biphenyls (PCBs), polybrominated biphenyls (PBBs), pesticides, polycyclic aromatic hydrocarbons (PAHs), phthalate esters (PEs), alkylphenols (APs), bisphenol A (BPA) or hormones included in different lists of priority and emerging pollutants because of their action as endocrine disrupting compounds (EDCs) was developed. (who.int)

Polychlorinated biphenyls (PCBs), all of which are man-made, are among the most stable organic compounds known. (pacelabs.com)
PCBs (PCB polychlorinated biphenyls) were once widely used as dielectric fluids and heat transfer agents. (vedantu.com)
PCBs, or polychlorinated biphenyls, are toxic and carcinogenic chlorine compounds. (elektro-ade.at)
Polychlorinated biphenyls (PCBs) have no odor and range from colorless to light yellow. (coosariver.org)
In one project, my team developed and applied a statistical approach, called latent-class modeling, to a study of polychlorinated biphenyls (PCBs) and endometriosis. (nih.gov)
Polychlorinated Biphenyls (PCBs) were used in industrial chemicals and electrical work until the 1970s, but they can still be found in humans and animals today. (foodsafetynews.com)
We investigate bioavailability of polychlorinated biphenyls (PCBs) from polypropylene microplastic by measuring solid-water distribution coefficients, gut fluid solubilization, and bioaccumulation using sediment invertebrate worms as a test system. (researchgate.net)
Seven of ten farmed salmon purchased at grocery stores in Washington DC, San Francisco, and Portland, Oregon were contaminated with polychlorinated biphenyls (PCBs) at levels that raise health concerns, according to independent laboratory tests commissioned by Environmental Working Group. (ewg.org)
These include polychlorinated biphenyls (PCBs), which are typically mixtures of many isomers with varying degrees of chlorine substitution ( Layton. (me-cabo.com)
Another fact that may have previously deterred the scientific community from showing interest in CPs is their moderate persistence compared to earlier studied persistent pollutants, such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs). (oaepublish.com)
Dioxins and dioxin-like compounds measurements were added to polychlorinated biphenyls (PCBs) and organochlorine pesticides to expand the exposure profile in a follow-up to the Anniston Community Health Survey (ACHS II, 2014) and to study diabetes associations. (cdc.gov)
Since, however, the numbers were small, dose-response relationships could not be evaluated, and the role of compounds other than PCBs could not be excluded, the evidence was considered to be limited. (who.int)

Remediation is necessary as select semi-volatile organic compounds, polychlorinated biphenyl mixtures, pesticides, and metals are present in the soil. (peoriagov.org)
Polychlorinated biphenyls are also known as PCB polychlorinated biphenyls were once popular pesticides. (vedantu.com)

The oxidative coupling of phenol itself typically gives a mixture of isomers. (wikipedia.org)
Industrial products consisting of a mixture of chlorinated biphenyl congeners and isomers. (lookformedical.com)
If we consider the vast number of CP isomers present in commercial mixtures and the potential formation of various types of metabolites from these original compounds, it becomes evident that an immense array of CP metabolite structures could emerge, which considerably amplifies the complexity of the analysis. (oaepublish.com)

In labs, biphenyl is mainly used as a heat transfer agent as a eutectic mixture with diphenyl ether. (vedantu.com)

HIGHLIGHTS: Polybrominated biphenyls (PBBs) are chemicals produced by human activity and are found in plastics used in many consumer products to make them difficult to burn. (cdc.gov)
Rainbow trout (Oncorhynchus mykiss) was exposed through the diet to a mixture of non-ionic organic chemicals for 28 d, followed by a depuration phase, in accordance with OECD method 305. (bvsalud.org)
METHODS: Using data from the INfancia y Medio Ambiente (INMA) Spanish birth cohort (n=1,911), prenatal exposure to persistent chemicals [hexachlorobenzene (HCB), 4-4'-dichlorodiphenyldichloroethylene (DDE), polychlorinated biphenyls (PCB-138, -150, and -180), 4 perfluoroalkyl substances (PFAS)] and nonpersistent chemicals (8 phthalate metabolites, 7 phenols) was assessed using blood and spot urine concentrations. (bvsalud.org)
The process for this invention can be used for the preparation of alkylated aromatic compounds, which are fine chemicals and/or used in the preparation of fine chemicals. (allindianpatents.com)
The process for this invention could be used for the preparation of alkylated aromatic compounds, which re fine chemicals and/or used in the preparation of fine chemicals. (allindianpatents.com)
Aralkylated aromatic compounds are useful fine chemicals, these are also used as intermediates in a number of organic synthesis. (allindianpatents.com)
PCB Polychlorinated biphenyl, a class of synthetic chemicals consisting of a homologous series of compounds beginning with monochlorobiphenyl and ending with decachlorobiphenyl. (visual-3d.es)
This process involves mixing more than a million gallons of water, sand and proprietary toxic chemicals and injecting this mixture at very high pressure into horizontally drilled wells as deep as 10,000 feet below the surface. (chej.org)

Biphenyl forms colorless crystals and is an organic compound. (vedantu.com)

Since PBBs are no longer produced or used, the risk of Studies in animals exposed to large amounts of PBBs for a exposure to these compounds is low. (cdc.gov)
Progress in the field of ecotoxicological studies is important because long-term exposure from the environment and bioaccumulation of toxic compounds in the human food chain may cause indirect health effects on humans. (springer.com)
The acute toxicity of these compounds is generally low and may not pose a direct health hazard during exposure [ 2 ]. (springer.com)
Urban and non-urban populations vary profoundly in their sensitivity to CHD caused by exposure to these compounds. (hhs.gov)
Extrapolating the DNT in vitro battery BMCs to human FR exposure via breast milk suggests low risk for individual compounds. (nih.gov)
However, it raises a potential concern for real-life mixture exposure, especially when different compounds converge through diverse modes-of-action on common endpoints, like oligodendrocyte differentiation in this study. (nih.gov)
OBJECTIVE: The objective of this study was to evaluate the associations between prenatal exposure to EDCs and children's body mass index (BMI) growth trajectories using single exposure and mixture modeling approaches. (bvsalud.org)

1995. Organochlorine compounds and estrogen-related cancers in women. (cdc.gov)

For example, the Aroclor 1242 is 42% chlorine by weight, with the more chlorinated mixtures generally being the most persistent and toxic. (pacelabs.com)
However, it is more and more recognized that there is also a need to assess the environmental impact of toxic compounds within fire effluents. (springer.com)
Many of these compounds are considered toxic and potential environmental pollutants. (lookformedical.com)
The earth alkali metal barium and its water-soluble compounds are toxic. (elektro-ade.at)
As a result, folks who eat these fish and animals are exposing themselves to more toxic PCB compounds. (coosariver.org)
Dioxin toxic equivalents (TEQs) were calculated for all dioxin-like compounds. (cdc.gov)

the most common commercial mixtures are called Aroclors. (pacelabs.com)

Many solvates of alkali metal salts of biphenyl anion have been characterized by X-Ray crystallography. (vedantu.com)

1997. Inhibition of L-aromatic amino acid decarboxylase by polychlorinated biphenyls. (cdc.gov)
A liver microsomal cytochrome P-450 monooxygenase capable of biotransforming xenobiotics such as polycyclic hydrocarbons and halogenated aromatic hydrocarbons into carcinogenic or mutagenic compounds. (lookformedical.com)
Finally, I like to tell you this aromatic cross-coupling reaction to give expected all kinds of biphenyl compound very nicely. (lindau-nobel.org)
The present invention relates to an improved process for the preparation of aralkylated aromatic compounds by catalytic alkylation of aromatic compounds with aromatic alkylating agent using a solid catalyst comprising gallium. (allindianpatents.com)
Both the homogenous and heterogeneous catalyzed liquid phase processes for the preparation of aralkylated aromatic compounds are known in the prior art. (allindianpatents.com)

PBBs are mixtures of brominated biphenyl compounds known as congeners. (cdc.gov)
There are 209 distinct PCB compounds (known as congeners) with from 1 to 10 chlorine atoms on a biphenyl molecule. (pacelabs.com)

Compounds that contain a BENZENE ring fused to a furan ring. (lookformedical.com)
The insecticidal composition contains an active ingredient A and an active ingredient B, wherein the active ingredient A may be furan tebufenozide, and the active ingredient B may be any one of the following compounds: flubendiamide and chlorantraniliprole, and a weight ratio of the active ingredient A to the active ingredient B ranges from 1:60 to 60:1. (google.com)

The other synonyms used for Methyl Biphenyl are 4-Methylbiphenyl, 4-Phenyltoluene, 644-08-6, 4-Methyl-1, 1-methyl-4-phenyl benzene. (vedantu.com)
Its relative synonyms are 2-isopropyl biphenyl, ISOPROPYL BIPHENYL, (1-phenyl-2-propane-2-yl)benzene, 19486-60-3, UNII-W161X7N5AA. (vedantu.com)
According to a US patent US 3,678,122 [1972], diphenylmethane was prepared by treating a mixture of benzene and benzyl chloride with CuCl2. (allindianpatents.com)
According to this patent, 200 g a-methyl benzyl chloride was added to a refluxing mixture of 500 g benzene and 5 g A1C13 and the whole mixture refluxed for 5h to give 120 g α-methyl bezylbenzene. (allindianpatents.com)

Polychlorinated Biphenyls" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (wakehealth.edu)

Statistical approaches for modeling chemical mixtures is an exciting and emerging field, especially when exposures to environmental pollutants are measured and analyzed in relation to health outcomes. (nih.gov)
The researchers pointed out, however, that while the effects of each single chemical compound are known, there is no research on the effects of having a complicated mixture of many organic pollutants. (foodsafetynews.com)

This compound is considered an environmental toxin, and may pose reproductive, as well as, other health risks for animals and humans. (lookformedical.com)

Biphenyl can be synthesized by treatment of phenylmagnesium bromide with copper(II) salts. (vedantu.com)

The number and placement of the chlorine atoms on the biphenyl molecule determines how the congener is named. (pacelabs.com)

Today, Teflon-like compounds called PFAS are found in the blood of almost all Americans. (ewg.org)

In classical toxicological thinking, the metabolism of a persistent pollutant implies that the compound has decreased its harmful properties. (oaepublish.com)

Aroclor names reflect the percent chlorine (by weight) of the mixture. (pacelabs.com)

Biphenyl cannot be dissolved in water but is soluble in organic solvents. (vedantu.com)
The approach was designed to remove the lower molecular weight compounds, which are the more soluble and mobile fraction of the contamination, via chemical oxidation while cementing the remaining higher molecular weight fraction of the tar in place. (fmc.com)

This mixture is kept stable at 400 degrees. (vedantu.com)
On the other hand if we can use organoboron compound, carbon-boron compound, if such organoboron compound reacts this type of cross coupling reaction, that should be very good because organoboron compound is very stable towards water. (lindau-nobel.org)

Depending on the fire's specific conditions, many diverse chemical compounds are produced in varying amounts. (springer.com)
An amount (or concentration) of a metal's compound is the sum of the amounts (or concentrations) of that metal in those compounds. (ontario.ca)
How come a globally used industrial chemical, produced in extensive volumes during at least 50 years and today found in biological samples often in higher amounts than of other environmental compounds, has only recently become a commonly recognized environmental and human health concern? (oaepublish.com)

The higher corrosion inhibition of compound HM-1228 can be attributed to the presence of di- N -ethyl groups that enhance both electron donating ability and lipophilic properties. (nature.com)

Therefore if you try such a reaction in the solvent and if in the solvent you had many smaller amount of the water as impurity, water immediately reacts with active organometal compound to decompose. (lindau-nobel.org)

I enjoyed reading the article, "A Century of Chemistry and of C&EN" in the Aug. 7/14, 2023, issue of C&EN (page 18). (acs.org)

Biphenyl is characterized through chromatographic analysis of an extract that is prepared by using an organic solvent. (vedantu.com)
A chlorinated epoxy compound used as an industrial solvent. (lookformedical.com)
The molecules of any solvent exert their action by interacting with those of the solute, giving rise to a homogeneous mixture (dissolution). (itwreagents.com)

To my knowledge, it was the first time that synthetic organic compounds were used as the active elements in electronic devices. (acs.org)

17. Other reactions like cannizarros reaction, prins reaction, especially reactions of carbonyl compounds. (pharmatutor.org)

Today I want to discuss a little bit about the cross coupling reaction of organoboron compound, the ways various organics electrify. (lindau-nobel.org)
For such a carbon-carbon bond formation reaction usually we use the various organometal compounds with various organic halides. (lindau-nobel.org)
In this type of cross coupling reaction we can use many different kinds of organometal compounds such as organolithium compound, magnesium compound. (lindau-nobel.org)
Other organometal compounds react with organic halide under such reaction condition to give this kind of carbon-carbon bond formation reaction. (lindau-nobel.org)
So this type of cross coupling reaction with organic halide in the presence of transitional metal catalyst such as palladium compound we never then expected cross coupled product. (lindau-nobel.org)
But fortunately we found we can obtain such a compound by using cross coupling reaction between the binary boron compound and the binary halide. (lindau-nobel.org)
The first one is the cross coupling reaction between binary boron compound and binary halide to give expected conjugated alkadiene. (lindau-nobel.org)
The second one is the cystic reaction of B saturated alkyl-1 compound with alkenyl-halide to give this type of compound. (lindau-nobel.org)
So first I tell you the cross-coupling reaction of alkenylborane compound, alkenyl halide, because in this type of reaction I can point out one of the big advantages. (lindau-nobel.org)
Similarly we can obtain this Z-1-alkenylborane compound by this reaction by using the disiamylborane or dicyclohexylborane. (lindau-nobel.org)
The main disadvantages of the homogeneous acid catalyzed processes are as follows: 1) The separation and recovery of the dissolved acid catalysts from the liquid reaction mixture is difficult. (allindianpatents.com)

For nonpolar compounds and for a mixture of a polar and nonpolar compound, no effect was observed for the presence of any one compound in the mixture on the desorption efficiency of the others. (cdc.gov)
For polar compounds a dependency was seen on the presence of other compounds. (cdc.gov)

in a mixture, used to feed birds. (wordsmyth.net)

I have focused on Bayesian statistical methods and their applications in analyzing diagnostic accuracy data and modeling chemical mixtures. (nih.gov)

The adsorption of these compounds on the surface of carbon steel followed Langmuir isotherm. (nature.com)

1. How is Biphenyl Used in Food and Nutritional Analysis? (vedantu.com)
Our analysis revealed that there was a significant association between specific PCB compounds and incident endometriosis. (nih.gov)

So not only that, we found many different kinds of organoboron compounds react with a number of organic halide under such a condition in the presence of palladium catalysed base to give all expected cross coupling product. (lindau-nobel.org)
suggestive positive associations for the joint effect of the mixture were found but were not significant. (cdc.gov)

The invention belongs to technical field of pesticide, relate to a kind of Pesticidal combination that contains furans worm hydrazides and amides compound. (google.com)

and 58 to 92 percent for biphenyl. (cdc.gov)

Anatomy7

Organisms17

Diseases2

Chemicals and Drugs95

Analytical, Diagnostic and Therapeutic Techniques and Equipment22

Phenomena and Processes33

Disciplines and Occupations3

Technology, Industry, Agriculture3

Information Science3

Health Care12

Geographicals5

Polycyclic aromatic hyd5

PCBs12

Pesticides2

Isomers3

Diphenyl1

Chemicals8

Colorless1

Exposure7

Organochlorine1

Toxic6

Commercial mixtures1

Alkali metal1

Aromatic5

Congeners2

Furan2

Benzene4

MeSH1

Pollutants2

Humans1

Salts1

Atoms1

PFAS1

Pollutant1

Aroclor1

Soluble2

Stable2

Amounts3

Inhibition1

Reacts1

20231

Solvent3

Synthetic1

Reactions1

Reaction11

Polar2

Birds1

Chemical1

Carbon1

Analysis2

Found2

Invention1

Percent1