polychlorinated biphenyl

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polybrominated biphenyl (PBB) any of various brominated derivatives of biphenyl; uses and toxic hazards are similar to those of polychlorinated biphenyls. They typically are deposited in body fat stores and are rarely mobilized except through lactation.
polychlorinated biphenyl (PCB) any of various chlorinated derivatives of biphenyl, toxic and carcinogenic nonbiodegradable compounds used as heat-transfer agents and electrical insulators; they are readily absorbed from the gastrointestinal tract, and those with a lower percentage of chlorine are associated with a higher toxicity but are more readily excreted.

pol·y·chlo·rin·at·ed bi·phen·yl (PCB),

biphenyl in which some or all of the hydrogen atoms attached to ring carbons are replaced by chlorine atoms; a [probable] human carcinogen and teratogen.

polychlorinated biphenyl


pol·y·chlo·rin·at·ed bi·phe·nyl

(polē-klōri-nā-tĕd bī-fenil)
Agent in which some or all of the hydrogen atoms attached to ring carbons are replaced by chlorine atoms; possible human carcinogen and teratogen.

polychlorinated biphenyl

PCB. Any one of a family of industrial pollutants known to be capable of inducing cancer.
References in periodicals archive ?
Aroclor 1254, which consists of a mixture of polychlorobiphenyls (PCBs), induces rat CYPs 1A1/2, 2B1/2 (roughly corresponding to 2B6 in humans) and 2C6 (2C8/9 in humans) (Ku et al.
Aroclors are a mixture of hundreds of different congeners requiring identification by the analyst visually comparing the chromatography of the unknown with the chromatography of the standards.
Though PCBs in general are widely used, Mills said Aroclor 1268 was only used at the site in Brunswick and another place in Rhode Island, which suggests the chemical found in Georgia's least terns came from the LCP site.
2007 [15] studied the effects of Aroclor 1254 in adult tilapia and observed several reproductive alterations.
Moore, Comparative Carcinogenicity in Sprague- Dawlley Rats of the Polychlorinated Biphenyl Mixtures Aroclors 1016, 1242, 1254 and 1260.
Developmental exposure of rats to a reconstituted PCB mixture or aroclor 1254: Effects on organ weights, aromatase activity, sex hormone levels, and sweet preference behavior.
Each specific Aroclor contained mixtures of some of the 209 congeners, with chlorine contents of the different Aroclors ranging from 21% to 68%.
Chronic exposure of finfish to aroclor was found to induce surfacing phenomenon of fish as pointed out by (5).
The company used its plant in Newport to produce PCBs under the trade name Aroclor.