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Planar PCB Hazards to Fish, Wildlife, and Invertebrates: A Synoptic Review

机译:对鱼类,野生动物和无脊椎动物的平面pCB危害:概要回顾

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Ecological and toxicological aspects of polychlorinated biphenyls (PCBs) in theenvironment are reviewed with emphasis on biologically active congeners and fish and wildlife. Subtopics include sources and uses, chemical and biochemical properties, concentrations in field collection, lethal and sublethal effects, and recommendations for the protection of sensitive resources. A significant part of the toxicity associated with commercial PCB mixtures is related to the presence of about 20 planar congeners, i.e., cogeners without chlorine substitution in the ortho position. Planar PCB concentrations were usually highest in samples from near urban areas and in fat and liver tissues, filter-feeding bivalve mollusks, fish-eating birds, and carnivorous marine mammals. Adverse effects of planar PCBs on growth, survival, and reproduction are highly variable because of numerous biotic and abiotic modifiers, including interaction with other chemicals.

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