title: The fate of polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) in water from Poyang Lake, the largest freshwater lake in China.
abstract: The fate of polycyclic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) in the water columns from Poyang Lake was studied. The total concentrations of OCPs and PAHs were 19.10-111.78 ng L(-1) and 5.56-266.1 ng L(-1), respectively. Among OCPs, endosulfans, chlordanes, and HCHs accounted for 21.96%, 24.6% and 24.65%, and were the predominant pollutants. Results suggested that the main sources of DDTs were residue from technical DDTs and dicofol, as well as antifouling paints for ships, while for HCHs, the main sources included long-distance transmission, agriculture activities and the combination of industrial products with separate lindane in use. As for PAHs, the predominance of lower molecular weight congeners demonstrated that petroleum and the combustion products of fuel oil, as well as other pyrogenic sources, contributed to the main input of PAHs in the Poyang region. The vehicle emissions were mostly from diesel engines. Moreover, HCH, DDT and BaP concentrations in water of Poyang Lake were all below the threshold values.
authors.affiliation: Department of Civil and Environmental Engineering, School of Engineering, Hollister Hall, 527 College Ave, Cornell University, Ithaca, NY 14853, United States.
authors.forename: Hui
authors.initials: H
authors.lastname: Zhi
authors.affiliation: State Key Laboratory of Lake Science and Environment Research, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China. Electronic address: zhzhao@niglas.ac.cn.
authors.forename: Zhonghua
authors.initials: Z
authors.lastname: Zhao
authors.affiliation: State Key Laboratory of Lake Science and Environment Research, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, PR China.
authors.forename: Lu
authors.initials: L
authors.lastname: Zhang
mesh_terms: D002681:China; D002849:Chromatography, Gas; D002851:Chromatography, High Pressure Liquid; D004784:Environmental Monitoring / Q000379:methods / Q000706:statistics & numerical data*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D060106:Lakes / Q000737:chemistry*; D010575:Pesticides / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical
keywords: Organochlorine pesticides; Polycyclic aromatic hydrocarbons; Poyang Lake; Source identification; Spatial distribution