title: Distribution and ecological risk of organic pollutants in the sediments and seafood of Yangtze Estuary and Hangzhou Bay, East China Sea.
abstract: A wide variety of persistent organic pollutants (POPs) in the surface marine sediments and seafood from four geographic areas of the East China Sea were investigated. The POP concentrations were analyzed and their possible ecotoxicological risks assessed. The total concentrations of hexachlorocyclohexanes (HCHs), dichlorodiphenyltrichloroethanes (DDTs), polycyclic aromatic hydrocarbons (PAHs), and polychlorinated biphenyls (PCBs) in the sediments were found to be ND-22.40, ND-5.10, 32.10-171.70, and 0.60-63.00 ng/g dry weight (dw), respectively. Low-chlorinated biphenyl congeners and HCHs were predominantly found at the Hangzhou Bay and Yangtze River areas. The sediment ecotoxicological risk was assessed, indicating the toxic effect of PCBs and DDTs on benthic organisms. In marine organisms of economic importance, the concentration of total PAHs, PCBs, and organochlorine pesticides (OCPs) ranged from 43.20 to 291.20, 2.60 to 96.20, and 12.70 to 235.20 μg/kg dw, respectively. The bioaccumulation in marine organisms did not pose a significant health risk to consumers. As indicated by the POP residues in both marine sediments and organisms, POPs were persistent over time, posing a long-term risk to the local ecosystem and human health via the food chain.
authors.affiliation: Department of Marine Sciences, Ocean College, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Marine Ecosystem and Biogeochemistry, The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310032, China; Physical/Chemical Oceanography Department, Nigerian Institute for Oceanography and Marine Research, P.M.B. 12729 Lagos, Nigeria.
authors.forename: Adedayo O
authors.initials: AO
authors.lastname: Adeleye
authors.affiliation: Key Laboratory of Marine Ecosystem and Biogeochemistry, The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310032, China.
authors.forename: Haiyan
authors.initials: H
authors.lastname: Jin
authors.affiliation: Department of Marine Sciences, Ocean College, Zhejiang University, Hangzhou 310058, China. Electronic address: diyanan@zju.edu.cn.
authors.forename: Yanan
authors.initials: Y
authors.lastname: Di
authors.affiliation: Analysis and Inspection Center, Yanbian University, Park Road 977, Yanji City, Jilin Province 133002, China.
authors.forename: Donghao
authors.initials: D
authors.lastname: Li
authors.affiliation: Department of Marine Sciences, Ocean College, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Marine Ecosystem and Biogeochemistry, The Second Institute of Oceanography, State Oceanic Administration, Hangzhou 310032, China.
authors.forename: Jianfang
authors.initials: J
authors.lastname: Chen
authors.affiliation: Department of Marine Sciences, Ocean College, Zhejiang University, Hangzhou 310058, China.
authors.forename: Ying
authors.initials: Y
authors.lastname: Ye
mesh_terms: D061006:Bays / Q000737:chemistry; D002681:China; D004784:Environmental Monitoring; D063366:Estuaries; D019015:Geologic Sediments / Q000737:chemistry; D001556:Hexachlorocyclohexane; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010575:Pesticides / Q000032:analysis; D011078:Polychlorinated Biphenyls / Q000032:analysis; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis; D018570:Risk Assessment; D017747:Seafood / Q000706:statistics & numerical data*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical; D001556:Hexachlorocyclohexane; D011078:Polychlorinated Biphenyls
keywords: East China Sea; Ecological risk; Organisms; POPs; Surface sediment