title: Occurrence and bioaccumulation of polybrominated diphenyl ethers in sediments and paddy ecosystems of Liaohe River Basin, northeast China.
abstract: Concentrations of 16 polybrominated diphenyl ether (PBDE) congeners were measured in river sediments, paddy soils and three species of paddy-field organisms (crab, loach and carp) collected from the Liaohe River Basin, northeastern China. The total contents of PBDEs (∑16PBDEs) in sediments and paddy soils were in the ranges of 273.4-3246.3pg/g dry weight (dw), and 192.1-1783.8pg/gdw, respectively. BDE 209 was the dominant congener both in sediments and paddy soils. The concentrations of ∑16PBDEs in sediments were significantly higher than those in the adjacent paddy soils, indicating a potential transport of PBDEs from river to paddy ecosystems via river water irrigation. The biota-soil accumulation factor (BSAF) was calculated as the ratio between the lipid-normalized concentration in paddy-field organisms and the total organic carbon-normalized concentration in paddy soil. The average BSAF values of ∑15PBDEs followed the sequence of crab (3.6)>loach (3.3)>carp (2.1). BDE 154 had the highest BSAF value, and a parabolic trend between BSAF values of individual PBDE congeners and their logKOW values was observed. In view of the fact that crab had the larger BSAF value and higher lipid content, the ecological risk and health risk for crab cultivation in paddy fields should be of particular concern.
authors.affiliation: State Oceanic Administration Key Laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, Dalian 116023, China; Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116011, China.
authors.forename: Xindong
authors.initials: X
authors.lastname: Ma
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116011, China. Electronic address: hjzhang@dicp.ac.cn.
authors.forename: Haijun
authors.initials: H
authors.lastname: Zhang
authors.affiliation: State Oceanic Administration Key Laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, Dalian 116023, China; School of Chemistry Engineering & Light Industry, Dalian Polytechnic University, Dalian 116034, China.
authors.forename: Wenjun
authors.initials: W
authors.lastname: Yao
authors.affiliation: State Oceanic Administration Key Laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, Dalian 116023, China; School of Chemistry Engineering & Light Industry, Dalian Polytechnic University, Dalian 116034, China.
authors.forename: Wen
authors.initials: W
authors.lastname: Guo
authors.affiliation: State Oceanic Administration Key Laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, Dalian 116023, China.
authors.forename: Depeng
authors.initials: D
authors.lastname: Li
authors.affiliation: State Oceanic Administration Key Laboratory for Ecological Environment in Coastal Areas, National Marine Environmental Monitoring Center, Dalian 116023, China.
authors.forename: Ziwei
authors.initials: Z
authors.lastname: Yao
authors.affiliation: Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116011, China. Electronic address: chenjp@dicp.ac.cn.
authors.forename: Jiping
authors.initials: J
authors.lastname: Chen
mesh_terms: D002681:China; D017753:Ecosystem; D004784:Environmental Monitoring; D019015:Geologic Sediments; D055768:Halogenated Diphenyl Ethers / Q000032:analysis*; D012275:Oryza; D045483:Rivers; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D055768:Halogenated Diphenyl Ethers; D014874:Water Pollutants, Chemical
keywords: Bioaccumulation; Liaohe River Basin; Paddy field; Polybrominated diphenyl ethers; Sediment