Bioaccumulation and Trophic Transfer of Short Chain Chlorinated Paraffins in a Marine Food Web from Liaodong Bay, North China

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• 作者：Xindong Ma ; Haijun Zhang ; Zhen Wang ; Ziwei Yao ; Jingwen Chen ; Jiping Chen
• 刊名：Environmental Science & Technology
• 出版年：2014
• 出版时间：May 20, 2014
• 年：2014
• 卷：48
• 期：10
• 页码：5964-5971
• 全文大小：347K
• 年卷期：v.48,no.10(May 20, 2014)
• ISSN：1520-5851

文摘

Short chain chlorinated paraffins (SCCPs) are under the evaluation for inclusion into the Stockholm Convention on persistent organic pollutants. However, information on their bioconcentration and biomagnification in marine ecosystems is unavailable, limiting the evaluation of their ecological risks. In this study, seawater, sediment, zooplankton, invertebrates, and fishes collected from Liaodong Bay, Bohai Sea, North China were analyzed to investigate the residual level, congener group profile, bioaccumulation, and trophic transfer of SCCPs in a marine food web. The total concentrations of SCCPs ranged from 4.1 to 13.1 ng L^鈥? in seawater, 65 to 541 ng g^鈥? (dw) in sediment, and 86 to 4400 ng g^鈥? (ww) in organisms. Correspondence analysis indicated the relative enrichment of C₁₀Cl₅ and C₁₁Cl₅ formula groups in most aquatic organisms. Both the logarithm bioaccumulation factors (log BAFs: 4.1鈥?.7) and biota鈥搒ediment accumulation factors (BSAFs: 0.1鈥?.3) of individual congeners implied the bioaccumulation of SCCPs. The trophic magnification factor (TMF) of 鈭慡CCPs was determined to be 2.38 in the zooplankton鈥搒hrimp鈥揻ish food web, indicating biomagnification potential of SCCPs in the marine ecosystem. The TMF values of individual congener groups significantly correlated with their log K_OW values.