title: Residues, Sources and Potential Biological Risk of Organochlorine Pesticides in Surface Sediments of Qiandao Lake, China.
abstract: Sediment samples were analyzed to comprehensively characterize the concentrations, distribution, possible sources and potential biological risk of organochlorine pesticides in Qiandao Lake, China. Concentrations of sumHCH and sumDDT in sediments ranged from 0.03 to 5.75 ng/g dry weight and not detected to 14.39 ng/g dry weight. The predominant β-HCH and the α-HCH/γ-HCH ratios indicated that the residues of HCHs were derived not only from historical technical HCH use but also from additional usage of lindane. Ratios of o,p'-DDT/p,p'-DDT and DDD/DDE suggested that both dicofol-type DDT and technical DDT applications may be present in most study areas. Additionally, based on two sediment quality guidelines, γ-HCH, o,p'-DDT and p,p'-DDT could be the main organochlorine pesticides species of ecotoxicological concern in Qiandao Lake.
authors.affiliation: Qianjiang College of Hangzhou Normal University, Hangzhou, 310012, China. yanghuayun119@163.com.
authors.forename: Huayun
authors.initials: H
authors.lastname: Yang
authors.affiliation: Research Center of Environmental Sciences, College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou, 310032, China.
authors.forename: Shanshan
authors.initials: S
authors.lastname: Zhou
authors.affiliation: Qianjiang College of Hangzhou Normal University, Hangzhou, 310012, China.
authors.forename: Weidong
authors.initials: W
authors.lastname: Li
authors.affiliation: Qianjiang College of Hangzhou Normal University, Hangzhou, 310012, China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Department of Civil Engineering, University of New Mexico, Albuquerque, NM, 87106, USA.
authors.forename: Yunjie
authors.initials: Y
authors.lastname: Tu
mesh_terms: D002681:China; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D006843:Hydrocarbons, Chlorinated / Q000032:analysis* / Q000737:chemistry; D060106:Lakes / Q000737:chemistry*; D010573:Pesticide Residues / Q000032:analysis* / Q000737:chemistry; D010575:Pesticides / Q000032:analysis* / Q000737:chemistry; D012306:Risk; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D006843:Hydrocarbons, Chlorinated; D010573:Pesticide Residues; D010575:Pesticides; D014874:Water Pollutants, Chemical
keywords: Organochlorine pesticides (OCPs); Qiandao Lake; Residue