title: Organochlorine pesticides in soils around watersheds of Beijing reservoirs: a case study in Guanting and Miyun Reservoirs.
abstract: A systematic survey of organochlorine pesticides (OCPs) residues in soils around reservoirs that supply water to Beijing, China, has been lacking. 104 representative surface soil samples were collected around Guanting Reservoir (GTR) and Miyun Reservoir (MYR) in Beijing watershed to characterize concentrations and sources of organochlorine pesticides, hexachlorocyclohexane (HCH) and dichlorodiphenyltrichloroethane (DDT). Compared with other studies of OCPs in soils and with the Chinese environmental quality standard for soil, the concentrations of OCP were relatively lower in soils around the watershed. The results indicated that past agricultural application of OCPs was the major source of OCP residues in the watershed.
authors.affiliation: State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
authors.forename: Wenyou
authors.initials: W
authors.lastname: Hu
authors.forename: Yonglong
authors.initials: Y
authors.lastname: Lu
authors.forename: Guang
authors.initials: G
authors.lastname: Wang
authors.forename: Tieyu
authors.initials: T
authors.lastname: Wang
authors.forename: Wei
authors.initials: W
authors.lastname: Luo
authors.forename: Yajuan
authors.initials: Y
authors.lastname: Shi
authors.forename: Xiang
authors.initials: X
authors.lastname: Zhang
authors.forename: Wentao
authors.initials: W
authors.lastname: Jiao
mesh_terms: D002681:China; D003634:DDT / Q000032:analysis; D001556:Hexachlorocyclohexane / Q000032:analysis; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D012987:Soil / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D012987:Soil; D014874:Water Pollutants, Chemical; D001556:Hexachlorocyclohexane; D003634:DDT