title: Levels and distributions of organochlorine pesticides in the soil-groundwater system of vegetable planting area in Tianjin City, Northern China.
abstract: To study the influence of long-term pesticide application on the distribution of organochlorine pesticides (OCPs) in the soil-groundwater system, 19 soil samples and 19 groundwater samples were collected from agricultural area with long-term pesticide application history in Northern China. Results showed that the composition of OCPs changed significantly from soil to groundwater. For example, ∑DDT, ∑HCH, and ∑heptachlor had high levels in the soil and low levels in the groundwater; in contrast, endrin had low level in the soil and high level in the groundwater. Further study showed that OCP distribution in the soil was significantly influenced by its residue time, soil organic carbon level, and small soil particle contents (i.d. <0.0002 mm). Correlation analysis also indicates that the distribution of OCPs in the groundwater was closely related to the levels of OCPs in the soil layer, which may act as a pollution source.
authors.affiliation: School of Water Conservancy, North China University of Water Conservancy and Electric Power, Zhengzhou, 450045, Henan, China.|State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 Dayangfang, Beiyuan Road, Chaoyang District, Beijing, 100012, China.
authors.forename: Hong-Wei
authors.identifier: http://orcid.org/0000-0002-4519-0771
authors.initials: HW
authors.lastname: Pan
authors.affiliation: School of Water Conservancy, North China University of Water Conservancy and Electric Power, Zhengzhou, 450045, Henan, China.
authors.forename: Hong-Jun
authors.initials: HJ
authors.lastname: Lei
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 Dayangfang, Beiyuan Road, Chaoyang District, Beijing, 100012, China.
authors.forename: Xiao-Song
authors.initials: XS
authors.lastname: He
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 Dayangfang, Beiyuan Road, Chaoyang District, Beijing, 100012, China. 1046493120@qq.com.
authors.forename: Bei-Dou
authors.initials: BD
authors.lastname: Xi
authors.affiliation: School of Water Conservancy, North China University of Water Conservancy and Electric Power, Zhengzhou, 450045, Henan, China.
authors.forename: Yu-Ping
authors.initials: YP
authors.lastname: Han
authors.affiliation: State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, No. 8 Dayangfang, Beiyuan Road, Chaoyang District, Beijing, 100012, China.
authors.forename: Qi-Gong
authors.initials: QG
authors.lastname: Xu
mesh_terms: D000383:Agriculture / Q000379:methods; D002681:China; D004784:Environmental Monitoring; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D010575:Pesticides / Q000032:analysis*; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis*; D014675:Vegetables; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D006843:Hydrocarbons, Chlorinated; D010575:Pesticides; D012987:Soil; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical
keywords: Distribution; Influencing factors; Organochlorine pesticides; Soil–groundwater system; Vegetable planting base