title: Polybrominated diphenyl ethers occurrence in major inflowing rivers of Lake Chaohu (China): characteristics, potential sources and inputs to lake.
abstract: Eight commonly occurring polybrominated diphenyl ethers (PBDEs), including BDE 28, 47, 99, 100, 153, 154, 183, 207, and 209, were investigated in water samples from seven major inflowing rivers of Lake Chaohu to determine the distribution characteristics, potential sources and inputs to the lake. The sum of 8 BDE congeners (Σ8PBDEs) had a concentration varied from 0.31 to 84 ng L(-1), with those of BDE 209, BDE 47, BDE 99, and BDE 153 being 0.31-83, <0.012-0.36, <0.012-1.3, and <0.012-0.77 ng L(-1), respectively. These levels were in the high range of the global PBDEs concentrations in the water environments. The highest concentrations of Σ8PBDEs were detected in the western rivers, of which the main pollution sources were strongly related to human activities in urban centers, such as automobile-derived wastes. A sewage treatment plant was likely an important source of the lower brominated BDEs input to one western river. The correlation analyses (all p<0.05) between PBDEs and DOC, TN, TP, and EC, suggested that the distributions and sources of PBDEs in rivers might also be related with the soil erosion by heave floods. Σ8PBDEs input to Lake Chaohu from the rivers outlets was estimated at 344 kg yr(-1) during the flood season. BDE 209 was the dominant contributor with an input of 340 kg yr(-1), followed by BDE 99 (1.3 kg yr(-1)), BDE 47 (0.83 kg yr(-1)) and BDE 153 (0.60 kg yr(-1)).
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Wang
authors.forename: Beidou
authors.initials: B
authors.lastname: Xi
authors.forename: Shouliang
authors.initials: S
authors.lastname: Huo
authors.forename: Lin
authors.initials: L
authors.lastname: Deng
authors.forename: Hongwei
authors.initials: H
authors.lastname: Pan
authors.forename: Xunfeng
authors.initials: X
authors.lastname: Xia
authors.forename: Jingtian
authors.initials: J
authors.lastname: Zhang
authors.forename: Yuqing
authors.initials: Y
authors.lastname: Ren
authors.forename: Hongliang
authors.initials: H
authors.lastname: Liu
mesh_terms: D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry; D055768:Halogenated Diphenyl Ethers / Q000032:analysis*; D060106:Lakes / Q000737:chemistry*; D011075:Polybrominated Biphenyls / Q000032:analysis; D045483:Rivers / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: C477694:2,2',4,4',5-brominated diphenyl ether; D055768:Halogenated Diphenyl Ethers; D011075:Polybrominated Biphenyls; D014874:Water Pollutants, Chemical; C517828:hexabrominated diphenyl ether 153; C511295:2,2',4,4'-tetrabromodiphenyl ether; C533760:tribromodiphenyl ether 28; C010902:decabromobiphenyl ether
keywords: Automobile wastes; PBDEs input; Polybrominated diphenyl ethers; Sewage treatment plant; Source identification