title: Trophic magnification of polybrominated diphenyl ethers in the marine food web from coastal area of Bohai Bay, North China.
abstract: Trophic transfer of polybrominated diphenyl ethers (PBDEs) in aquatic ecosystems is an important criterion for assessing their environmental risk. This study analyzed 13 PBDEs in marine organisms collected from coastal area of Bohai Bay, China. The concentrations of total PBDEs (Σ13PBDEs) ranged from 12 ± 1.1 ng/g wet weight (ww) to 230 ± 54 ng/g ww depending on species. BDE-47 was the predominant compound, with a mean abundance of 20.21 ± 12.97% of total PBDEs. Stable isotopic ratios of carbon (δ(13)C) and nitrogen (δ(15)N) were analyzed to determine the food web structure and trophic level respectively. Trophic magnification factors (TMFs) of PBDEs were assessed as the slope of lipid equivalent concentrations regressed against trophic levels. Significant positive relationships were found for Σ13PBDEs and eight PBDE congeners (BDE-28, BDE-47, BDE-49, BDE-66, BDE-85, BDE-99, BDE-100 and BDE-154). Monte-Carlo simulations showed that the probabilities of TMF >1 were 100% for Σ13PBDEs, BDE-47, BDE-85, BDE-99 and BDE-100, 99% for DE-28, BDE-49, BDE-66 and BDE-154, 94% for BDE-153, and 35% for BDE-17.
authors.affiliation: College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
authors.forename: Mihua
authors.initials: M
authors.lastname: Shao
authors.affiliation: College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Tao
authors.affiliation: College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
authors.forename: Man
authors.initials: M
authors.lastname: Wang
authors.affiliation: International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
authors.forename: Hongliang
authors.initials: H
authors.lastname: Jia
authors.affiliation: International Joint Research Centre for Persistent Toxic Substances (IJRC-PTS), College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China; IJRC-PTS, State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China. Electronic address: ijrc_pts_paper@yahoo.com.cn.
authors.forename: Yi-Fan
authors.initials: YF
authors.lastname: Li
mesh_terms: D000818:Animals; D059001:Aquatic Organisms / Q000737:chemistry*; D061006:Bays; D001822:Body Burden; D002247:Carbon Isotopes / Q000032:analysis; D002681:China; D020387:Food Chain; D055768:Halogenated Diphenyl Ethers / Q000032:analysis / Q000493:pharmacokinetics*; D009587:Nitrogen Isotopes / Q000032:analysis; D011075:Polybrominated Biphenyls / Q000032:analysis / Q000493:pharmacokinetics*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000493:pharmacokinetics*
chemical_list: C477694:2,2',4,4',5-brominated diphenyl ether; D002247:Carbon Isotopes; D055768:Halogenated Diphenyl Ethers; D009587:Nitrogen Isotopes; D011075:Polybrominated Biphenyls; D014874:Water Pollutants, Chemical; C517828:hexabrominated diphenyl ether 153; C517827:pentabrominated diphenyl ether 100; C511295:2,2',4,4'-tetrabromodiphenyl ether; C572625:2,2',4,5'-tetrabromodiphenyl ether; C533761:hexabromodiphenyl ether 154; C533760:tribromodiphenyl ether 28
keywords: Marine food web; Monte-Carlo simulation; Polybrominated diphenyl ethers; Trophic magnification