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Toxicity equivalency values for polychlorinated biphenyl mixtures
Author(s) -
Burkhard Lawrence P.,
Lukasewycz Marta T.
Publication year - 2008
Publication title -
environmental toxicology and chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.1
H-Index - 171
eISSN - 1552-8618
pISSN - 0730-7268
DOI - 10.1897/07-349.1
Subject(s) - polychlorinated biphenyl , polychlorinated dibenzofurans , environmental chemistry , chemistry , chlorine atom , polychlorinated dibenzodioxins , biphenyl , toxic equivalency factor , fish <actinopterygii> , persistent organic pollutant , pollutant , organic chemistry , biology , fishery , medicinal chemistry
For aquatic, avian, and mammalian species, dioxin equivalency values (TEQs) were computed for Aroclor, Clophen, Kanechlor, Chlorofen, Sovol, Delor, Phenoclor, and Chinese polychlorinated biphenyl (PCB) mixtures by using World Health Organization toxicity equivalency factors (TEFs) and compound‐specific compositional data for PCBs, polychlorinated dibenzo‐ p ‐dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs) for the individual mixtures. The TEQs were similar across the different PCB product lines for mixtures of similar chlorine content. Depending on the PCB mixture, the polychlorinated dibenzo‐ p ‐dioxins/dibenzofurans (PCDD/Fs) in the mixture contributed anywhere from 0 to 96% of the total TEQs, and the impact of PCDD/Fs was greatest for the fish TEQs. In comparison to the dioxin‐like PCBs, few measurements have been performed for PCDD/Fs in the commercial PCB products.