biphenyl

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Related to biphenyls: Polybrominated biphenyls, Aroclor

biphenyl

 [bi-fen´il]
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.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

di·phen·yl

(dī-fen'il),
Colorless liquid; used as heat transfer agent, frequently as polychlorinated biphenyls (PCBs); as fungistat for oranges (applied to inside of shipping container or wrappers); and in organic syntheses. Produces convulsions and central nervous system depression.
Synonym(s): biphenyl, phenylbenzene
Farlex Partner Medical Dictionary © Farlex 2012

di·phen·yl

(dī-fen'il)
Colorless liquid that is used as a heat transfer agent, frequently as a polychlorinated biphenyl (PCB); used as fungistat for oranges and in organic syntheses. Produces convulsions and central nervous system depression.
Synonym(s): biphenyl, phenylbenzene.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
This project, which is part of the execution of the National Implementation Plan for the Stockholm Convention on Persistent Organic Pollutants (POPs), addresses the sources of polychlorinated biphenyls (PCBs) in Tunisia, such as Oils and wastes and aims to eliminate equipment and materials that contain and / or are contaminated with PCBs.
Exposure to polychlorinated biphenyls and hearing impairment in children.
3First example of chiral dopant containing biphenyl core was reported by.
One example is PCBs or polychlorinated biphenyls which are abundant in our environment, even though they were banned in the 1970s.
Search terms included "polychlorinated biphenyls (PCBs) and routes of exposure," "PCBs and infant outcomes," "PCBs and breastfeeding," "PCBs and infant growth," "PCBs and infant development," and "adverse effects of PCBs in children." Subsequently, the reference sections of articles were examined for additional relevant articles.
Toxicological Profile for Polychlorinated Biphenyls (PCBs).
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.
"The studies of pesticides and other contaminants that are very common, such as mercury, lead and polychlorinated biphenyls (PCBs), show that all are decreasing IQ levels," says Guillette.
A new reference material (RM), RM 8504, has been prepared for use as a diluent oil with Aroclors in transformer oil Standard Reference Materials (SRMs) 3075 to 3080 and SRM 3090 when developing and validating methods for the determination of polychlorinated biphenyls (PCBs) as Aroclors in transformer oil or similar matrices.
The directives also cover mercury, cadmium and hexavalent, as well as limiting polybrominated biphenyls and polybrominated diphenyl ethers (flame retardants).
Coming in July, EU Directive 2002/95/EC, "Restriction of Hazardous Substances" (RollS), will limit those metals plus polybrominated biphenyls and polybrominated diphenyl ethers in waste E/E equipment to 100 ppm for cadmium and 1000 ppm for each of the other substances.
Burkholderia xenovarans (strain LB400) is a bacterium found in soil that has the ability to degrade polychlorinated biphenyls and other contaminants.