作    者：江锦花, 等
影响因子：0.372
刊物名称：Fresenius Environmental Bulletin
出版年卷：2016, 25(5): 1581-1596

文章摘要：The concentrations of 20 polychlorinated biphenyls (PCB) congeners and 39 polybrominated diphenyl ethers (PBDE) congeners in sediments collected from three major coastal aquaculture areas in Zhejiang province, China were analyzed. The concentrations of Σ20 PCB and Σ39 PBDE congeners ranged from nd-43.76 ng/g, and 1.35- 26.18 ng/g, respectively. In general, the average homolog composition of PCBs decreased in the following order: penta- > hexa- > tetra- > hepta- > tri- > octa –PCBs. The average homolog composition of PBDEs decreased in the following order: mono- > di- > tri- > tetra- > penta- > hexa- > hepta –BDEs. A statistical analysis using principal component analysis was performed on the 20 PCB and 39 PBDE congener profiles. The first principal component PCB-52, 105, 112, 118, 123, 126, 156, 157, 167, 169, and 189, accounted for 51.17% of the total variance in Taizhou city, making a significant contribution to the local pollution levels. The contribution of BDE-2, 3, 8, 10, 17, 33, 47, 138, and 153 was relatively high in these samples. A significant correlation was observed between the concentrations of CB-105 and CB-123, 126, 156, 157, 167, and 169. There were also positive correlations between some bromine congeners, such as BDE-2 and BDE 3, BDE 8, BDE 10, and BDE 33; BDE-33 and BDE 8 and BDE 10; and BDE-33 and BDE 15, BDE 49, and BDE 77, with the low molecular weight bromine compounds likely to have originated from the decomposition of commercial bromine compounds.

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