title: Occurrence and geographic distribution of polycyclic aromatic hydrocarbons in agricultural soils in eastern China.
abstract: Polycyclic aromatic hydrocarbons (PAHs) in agricultural soils, eastern China, were studied through a collection of surface samples at 109 sites. The study covered US EPA priority pollutants but also several non-priority isomers including some dibenzopyrenes which are expected to have higher toxic potentials. The total PAH concentrations varied extensively from 8.8 to 3880 μg/kg, with a geometric mean of 158 μg/kg. There were significant differences in both the concentrations and composition profiles between the south and the north regions. The overall geographical distribution pattern was strongly influenced by both the per capita gross domestic product and soil organic carbon (SOC) content. The former is an indicator of anthropogenic emissions while soil SOC content is associated with the accumulative capacities of the soils. The sequestration mechanism is an important process controlling fates of PAHs in agricultural soil.
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Sun
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Liu
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
authors.forename: Shaojie
authors.initials: S
authors.lastname: Zhuo
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
authors.forename: Yuanchen
authors.initials: Y
authors.lastname: Chen
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
authors.forename: Huizhong
authors.initials: H
authors.lastname: Shen
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Yun
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China. gfshen12@gmail.com.
authors.forename: Guofeng
authors.initials: G
authors.lastname: Shen
authors.affiliation: College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, China.
authors.forename: Weiping
authors.initials: W
authors.lastname: Liu
authors.affiliation: School of Environment, Jinan University, Guangzhou, 510632, China.
authors.forename: Eddy Y
authors.initials: EY
authors.lastname: Zeng
authors.affiliation: College of Urban and Environmental Sciences, Peking University, Beijing, 100871, China. taos@pku.edu.cn.
authors.forename: Shu
authors.initials: S
authors.lastname: Tao
mesh_terms: D002681:China; D004784:Environmental Monitoring; D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D012989:Soil Pollutants
chemical_list: D011084:Polycyclic Aromatic Hydrocarbons; D012987:Soil; D012989:Soil Pollutants
keywords: Agricultural soil; Eastern China; Polycyclic aromatic hydrocarbons; Soil organic carbon