Human Health Risk Assessment of Toxic Elements in Farmland Topsoil with Source Identification in Jilin Province, China
文献类型： 外文期刊
作者： Li, Fengxu 1 ; Zhang, Jiquan 1 ; Cao, Tiehua 2 ; Li, Sijia 1 ; Chen, Yanan 1 ; Liang, Xuanhe 2 ; Zhao, Xin 2 ; Chen, Junw 1 ;
作者机构： 1.Northeast Normal Univ, Inst Nat Disaster Res, Dept Environm, Changchun 130024, Jilin, Peoples R China
2.Jilin Acad Agr Sci, Changchun 130017, Jilin, Peoples R China
关键词： toxic elements; health risk assessment; farmland soils; Jilin Province
期刊名称：INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH （ 影响因子：3.39； 五年影响因子：3.789 ）
ISSN： 1660-4601
年卷期： 2018 年 15 卷 5 期
页码：
收录情况： SCI
摘要： The presence of toxic elements in agricultural soils from anthropogenic activities is a potential threat to human health through the food chain. In this study, the concentration of toxic elements in 122 agricultural topsoil composite samples were determined in order to study the current status, identify their sources and assess the level of pollution and human health risk. The results showed that the mean concentrations of Zn, Cu, Pb, Cd, Hg and As in the farmland topsoil were 21.72, 15.09, 36.08, 0.2451, 0.0378 and 4.957 mgkg(-1), respectively. The spatial distribution showed that the soils were mainly contaminated by Cd, Pb and Hg in midwest Jilin but by Cu and As in the east. According to the pollution index (Pi), Nemerow integrated pollution index (PN) and Geo-Accumulation Index (I-geo), Cd and Pb were the main pollutants in the soils. The occurrence of these elements was caused by anthropogenic activities and they were concentrated in the Songyuan-Changchun-Siping economic belt. There is limited non-carcinogenic and carcinogenic health risk to humans. Principal component analyses suggest the Pb, Cd and Hg soil contamination was mainly derived from anthropogenic activities in the Midwest, but all examined toxic elements in the east were mainly due to geogenic anomalies and came from atmospheric deposition.
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