polychlorinated biphenyl


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Related to polychlorinated biphenyl: PCB

polychlorinated biphenyl

or

PCB,

any of a group of organic compounds originally widely used in industrial processes but later found to be dangerous environmental pollutants. Polychlorinated biphenyl is a fat-soluble, water-insoluble hydrocarbon containing chlorine. It is extremely stable, withstanding temperatures of up to 1,600°F; (870°C;), is fire-resistant, and has been used as a heat-transfer and insulating fluid in cooling systems and electrical equipment; it has also been used in sealants, rubber, paints, plastics, printing ink, and insecticides. The chemical has entered the environment largely as a pollutant from equipment leaks, the weathering of many materials that contain PCB, and through interaction with food products. PCBs are not readily biodegradable. Production has been banned in several industrialized countries; the United States stopped producing PCBs in 1977.

polychlorinated biphenyl

[¦päl·i′klȯr·ə‚nād·əd bī′fen·əl]
(organic chemistry)
Any member of the group of chlorinated isomers of biphenyl. Abbreviated PCB.
References in periodicals archive ?
Comparison of polychlorinated biphenyl levels across studies of human neurodevelopment.
2002) have shown that Flemish adolescents exposed to polychlorinated biphenyls (PCBs) and dioxins are more susceptible to infectious diseases.
The project, led by the Ministry of Environment and Sustainable Development, will achieve this goal by implementing environmental management systems of polychlorinated biphenyls in the energy sector stakeholders and strengthen the structure of provincial environmental authorities to ensure control and compliance Plan.
The production of polychlorinated biphenyls (PCBs) was banned worldwide by 1977, but the chemicals linger in the environment at hazardous waste sites, in contaminated fish and food supplies, and in old appliances.
RM 8504, Transformer Oil, is intended to be used as a diluent oil with transformer oil Standard Reference Materials (SRMs) 3075 to 3080 and SRM 3090 [1] when developing and validating methods for the determination of polychlorinated biphenyls (PCBs) as Aroclors (1) in transformer oil or similar matrices.
Chapter titles: Introduction to food toxicology; Part I Assessing and managing risks: Genetic susceptibility to dietary carcinogens; Assessing the mutagenicity of chemicals in food: the case of pesticides: The impact of chemical residues: the case of polychlorinated biphenyls (PCBs): Targeted and rapid methods in analysing residues in food; Good agricultural practice and HACCP systems in the management of pesticides and veterinary residues on the farm.
Contaminants found at the sites include polychlorinated biphenyls, or PCB, trichloroethylene, or TCE, and arsenic - all three are suspected carcinogens.
The US government banned PCBs, or polychlorinated biphenyls, in 1979.
Mercury Contamination: As stated in a Mayo Clinic fact sheet, mercury is the major contaminant found in fish, and some types of fish may also contain polychlorinated biphenyls (PCBs), dioxins and other chemical pollutants.
2 million would generate capacity for disposal of Polychlorinated Biphenyls in future.
Researchers at the State University of New York at Albany and the Florida Fish and Wildlife Conservation Commission in Melbourne teamed up to measure flame retardants called polybrominated diphenyl ethers (PBDEs) and the electric-insulation compounds known as polychlorinated biphenyls (PCBs).
Each child's serum also contained hexachlorobenzene and polychlorinated biphenyls.