Correlations between dioxin-like and indicators PCBs: Potential consequences for environmental studies involving fish or sediment
Babut, M. | Miege, C. | Villeneuve, B. | Abarnou, A. | Duchemin, J. | Marchand, P. | Narbonne, J.F.
Among the numerous PCB congeners, most of the dioxin-like PCBs (DL-PCBs) need to be characterized by hyphenated techniques. It has been shown in several instances that these congeners are well related to the total PCB content in fish. We examined datasets collected mainly in France, on freshwater and marine fish and sediments. A statistical model linking DL- and indicator PCBs was developed for a dataset composed of freshwater fishes, and proved to predict well DL-PCBs from indicator PCBs in all other fish sets, including marine ones. Type II error rates remained low in almost all fish sets. A similar correlation was observed in sediments. Non-dioxin-like PCBs elicit various adverse effects and represent 95% of the total PCBs. A European guideline for them is needed; the correlation between DL- and indicator PCBs could help develop this standard in the future. Dioxin-like PCBs in fish and maybe sediments are rather well predicted by indicator PCBs.
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