IMPACTS OF WASTEWATER IRRIGATION ON THE DISTRIBUTION OF HEAVY METALS IN AGRICULTURAL SOILS: A CASE STUDY IN FANGSHAN, BEIJING
文献类型: 外文期刊
作者: Han, Ping 1 ; Li, Cheng 1 ; Feng, Xiao-yuan 1 ; Ma, Zhi-hong 1 ; Lu, An-xiang 1 ; Pan, Li-gang 1 ; Wang, Ji-hua 1 ;
作者机构: 1.Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China
2.China Agr Univ, Coll Agr & Biotechnol, Beijing 100193, Peoples R China
关键词: Wastewater irrigation;Agricultural soil;Heavy metals
期刊名称:FRESENIUS ENVIRONMENTAL BULLETIN ( 影响因子:0.489; 五年影响因子:0.479 )
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收录情况: SCI
摘要: Levels of seven heavy metals were examined in soils from an agricultural area of Beijing which was irrigated with wastewater for a period of approximately 20 years. Mean concentrations of As, Cd, Cr, Hg, Cu, Pb, and Zn were 8.24, 0.209, 62.99, 0.133, 25.29, 23.91 and 86.29 mg/kg respectively. GIS techniques were used to characterize spatial variability of the metals and multivariate analysis was applied to identify their sources. The results suggest that wastewater irrigation is the primary source of Pb, Cd, Cu, Zn and Hg, while As and Cr originate from natural sources in these soils.
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