title: Bioaccumulation and trophic transfer of polybrominated diphenyl ethers (PBDEs) in a marine food web from Liaodong Bay, North China.
abstract: The concentrations of 21 polybrominated diphenyl ethers (PBDEs) congeners were analyzed in organisms within a marine food web collected from the Liaodong Bay, North China. The total concentrations of PBDEs in all samples ranged from 0.87 to 91.4 ng g(-1) lipid weight (lw). BDE-47 was the predominant congener and had a concentration ranging from 0.30 to 36.1 ng g(-1) lw. The trophic magnification factors (TMF) of the PBDEs were calculated using the trophic levels obtained from the stable nitrogen isotope ratios. The TMF value of ∑PBDEs was 3.50 for the entire food web and 2.21 for the food web excluding seabirds. Four concentration ratios, BDE-99/BDE-100, BDE-99/BDE-47, BDE-153/BDE-154 and BDE-183/BDE-154, decreased linearly with the increase of the trophic levels in the invertebrates and the fishes (p<0.01). The results suggested that the PBDEs were steadily metabolized in the trophic transfer process along the food chain.
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; State Oceanic Administration Key Laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, Dalian 116023, China; Key Laboratory of Industrial Ecology and Environmental Engineering (Ministry of Education), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors.forename: Xindong
authors.initials: X
authors.lastname: Ma
authors.forename: Haijun
authors.initials: H
authors.lastname: Zhang
authors.forename: Ziwei
authors.initials: Z
authors.lastname: Yao
authors.forename: Xiaofeng
authors.initials: X
authors.lastname: Zhao
authors.forename: Longxing
authors.initials: L
authors.lastname: Wang
authors.forename: Zhen
authors.initials: Z
authors.lastname: Wang
authors.forename: Jiping
authors.initials: J
authors.lastname: Chen
authors.forename: Jingwen
authors.initials: J
authors.lastname: Chen
mesh_terms: D000818:Animals; D059001:Aquatic Organisms / Q000378:metabolism*; D061006:Bays; D002681:China; D004784:Environmental Monitoring; D005399:Fishes / Q000378:metabolism; D005411:Flame Retardants / Q000378:metabolism; D020387:Food Chain; D055768:Halogenated Diphenyl Ethers / Q000378:metabolism*; D006842:Hydrocarbons, Brominated / Q000378:metabolism; D007448:Invertebrates / Q000378:metabolism; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D005411:Flame Retardants; D055768:Halogenated Diphenyl Ethers; D006842:Hydrocarbons, Brominated; D014874:Water Pollutants, Chemical
keywords: Biomagnification; Liaodong Bay; Marine food web; Polybrominated diphenyl ethers