Persistent organic pollutants in the Antarctic coastal environment and their bioaccumulation in penguins

摘要: Persistent organic pollutants (POPs), including polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), biphenyls (PCBs), polybrominated (PBDD/Fs), (PBBs), diphenyl ethers (PBDEs), have been identified in penguins, lichens, soils, ornithogenic soils the Antarctic coastal environment this study. To best of our knowledge, no previous study has reported PBDD/F PBB data from Antarctica. The POP mass contents penguins were following order: PCBs >> PBDEs >> PCDD/Fs; PCBs dominant (6310-144,000 pg/g-lipid), with World Health Organization toxic equivalency values being 2-14 times higher than those PCDD/Fs. Long-range atmospheric transport is most primary route by which POPs travel to Antarctica; however, local sources, such as research activities penguin colonies, also influence distribution environment. In biomagnification factor (BMF) was 61.3-3760, considerably that for other POPs. According BMF Adelie hydrophobic PBDE congeners more biomagnified at log Kow > 6, levels decreased Kow > 7.5 because larger molecular sizes inhibited transfer across cell membranes.