Spatial trends and bioaccumulation of organochlorine pollutants in marine zooplankton from the alaskan and canadian arctic

摘要

Planktonic copepods (Calanus glacialis and C. hyperboreus; n = 37) and water (n = 19) were collected to examine the spatial distribution and bioaccumulation of organochlorine contamiants(OCs) in the Alaskan and Canadian Arctic. The rank order of total OC(ΣOC) group concentrations in calanus samples was toxaphene ≥∑ polychlorinated biphenyls(PCBs) > ∑ hexachlorcyclohexane(HCH) > ∑DDT > ∑ chlordane-related compounds(CHLOR) > ∑ chlorobenzenes(ClB_z). The dominant analyte was α-HCH in all water and zooplankton samples. The most abundant toxaphene congener in water and zooplankaton samples was the hexachloroborane B6-923.