polychlorinated biphenyls


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polychlorinated biphenyls (PCBs)

[-klôr′inā′tid]
a group of more than 30 isomeric compounds used in plastics, insulation, and flame retardants and varying in physical form from oily liquids to crystals and resins. All are potentially toxic and carcinogenic. The toxicity varies with the type of PCB and concurrent exposure to other substances, such as carbon tetrachloride. Mild exposure may cause chloracne; severe exposure may result in hepatic damage.

polychlorinated biphenyls (PCBs)

toxic organic compounds containing more than one chlorine atom used in the manufacture of plastics and insulators; they are very stable and fat-soluble and accumulate in the food chain.

polychlorinated biphenyls, (pol´ēklôr´ənā´tid bīfē´nəlz),

n.pl more than 30 isomers and compounds used in plastics, insulation, and flame retardants and varying in physical form from oily liquid to crystals and resins. All are potentially toxic and carcinogenic. Mild exposure may cause chloracne; severe exposure may result in hepatic damage.

polychlorinated biphenyls

References in periodicals archive ?
Effect of prenatal exposure to polychlorinated biphenyls on incidence of acute respiratory infections in preschool Inuit children.
Torrijos, Selective determination of polychlorinated biphenyls in waste oils using liquid-liquid partition followed by headspace solid-phase microextraction and gas chromatography with atomic emission detection, J.
Environmental contaminants including polychlorinated biphenyls (PCBs), chlorinated pesticides, and mercury have been shown to disrupt the endocrine system in both humans and animals, and experimental studies have shown that these chemicals may decrease circulating TH levels during pregnancy.
A common Arctic fish can suffer subtle immunological impairments from polychlorinated biphenyls (PCBs) at concentrations found in some remote polarwaters, new research indicates.
A demonstration of the dangerous power of endocrine disruptors occurred in 1979 in Taiwan, when women who consumed rice oil contaminated with the industrial compounds known as polychlorinated biphenyls (PCBs) had children with numerous genetic and developmental problems and sons with abnormally small penises.
Monsanto invented polychlorinated biphenyls, PCBs, at their chemical plant in Anniston, Alabama, in 1929.
2002) demonstrated the ability of polychlorinated biphenyls to disrupt the development of the cochlea in rats by disrupting thyroid function.
Pollutants known as dioxins and furans, and at least some polychlorinated biphenyls (PCBs), have additive cancer-causing effects when mixed together, a new toxicology study indicates.
Structurally similar to polychlorinated biphenyls (PCBs), PBDEs have been shown to cause permanent neural defects in fetal exposure of mice.
Ganey and Boyd (2005) used the bioremediation of polychlorinated biphenyls (PCBs) as an example, which was an excellent choice.
Polychlorinated biphenyls (PCBs) have been associated with cancer for decades.
The authors go on to suggest that exposure to PBDEs may present a health hazard because of the similarity of the chemicals' molecules to those of another class of chemicals, polychlorinated biphenyls (PCBs).