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 ?
He and other researchers have reported that PCBs harm cognitive maturation in children.
PCB West 2006 is packed full of time-saving and cost-cutting ideas, design and manufacture strategies, and new technologies that will continue to inspire you for months after attending this year's conference.
Wise, Standard Reference Materials (SRMs) for the Calibration and Validation of Analytical Methods for PCBs (as Aroclor Mixtures), J.
The 32-employee plant has been operating environmentally safe disposal of high-level PCB transformers, capacitors and other PCB equipment since 1998.
The IRS felt that taking this position would be contrary to the intent of Congress when it defined PCB under Sec.
PCBs are a family of more than 200 related organic compounds that many industries have used, especially for electrical insulation.
The ocean is the final and largest sink of PCBs, the consequences of which remain unknown.
EPA officials said Thursday the import ban is no longer necessary because the industry has enough incinerator capacity to handle safely the foreign volume of PCB waste.
The AAP recommends all women breast feed, even if they have been cxposed to PCB in the past.
Another method, "retrofilling," involves draining and rinsing the transformer until it contains less than 50 PCB parts per million.
However, several factors present a strong case for the elimination of PCBS in noncommercial units.
The demand for compact and small electronic devices is increasing, which is leading to a reduction in the size of the PCBs used in these devices.