title: Occurrence of polychlorinated dibenzo-p-dioxins, dibenzofurans and biphenyls pollution in sediments from the Haihe River and Dagu Drainage River in Tianjin City, China.
abstract: The pollution status of polychlorinated dibenzo-p-dioxins, dibenzofurans (PCDD/Fs) and polychlorinated biphenyls (PCBs) in the sediments of Haihe River, which is the most polluted among the seven largest basins in China, Dagu Drainage River flowing through a chemical industry zone, and two other rivers flowing into Bohai Sea in Tianjin City, China were investigated. The concentrations of PCDD/Fs and PCBs in the sediments from the mainstream of Haihe River were 1.3-26pgI-TEQg(-1) dry weight (dw) and 0.07-0.54pgTEQg(-1)dw, respectively. Heavy PCDD/Fs and PCBs pollution, with 1264pgI-TEQg(-1)dw and 21pgTEQg(-1)dw, was found in sediment from Dagu Drainage River. The congener profiles of PCDD/Fs indicated that the principal contamination source was the production of pentachlorophenol (PCP) or PCP-Na in this area. The correlation between PCDD/Fs or PCBs and total organic matter (TOM) showed that PCDD/Fs or PCBs were independent on TOM.
authors.affiliation: State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Haidian District, Beijing, China.
authors.forename: Hanxia
authors.initials: H
authors.lastname: Liu
authors.forename: Qinghua
authors.initials: Q
authors.lastname: Zhang
authors.forename: Yawei
authors.initials: Y
authors.lastname: Wang
authors.forename: Zongwei
authors.initials: Z
authors.lastname: Cai
authors.forename: Guibin
authors.initials: G
authors.lastname: Jiang
mesh_terms: D001572:Benzofurans / Q000032:analysis*; D001713:Biphenyl Compounds / Q000032:analysis*; D002681:China; D019015:Geologic Sediments / Q000737:chemistry*; D000072317:Polychlorinated Dibenzodioxins / Q000031:analogs & derivatives* / Q000032:analysis; D045483:Rivers / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry; D014877:Water Pollution, Chemical
chemical_list: D001572:Benzofurans; D001713:Biphenyl Compounds; D000072317:Polychlorinated Dibenzodioxins; D014874:Water Pollutants, Chemical