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Potential sources and associated risk assessment of potentially toxic elements in paddy soils of a combined urban and rural area

文献类型： 外文期刊

作者： Chai, Yanjun 1 ; Li, Yan 2 ; Chen, Xiaolei 3 ; Zhang, Jin 1 ; Christie, Peter 1 ; Chow, Ka Lai 4 ; Ai, Chao 5 ; Shan, She 1 ;

作者机构： 1.Zhejiang Univ Sci & Technol, Sch Environm & Nat Resources, Key Lab Recycling & Ecol Treatment Waste Biomass, Hangzhou 310023, Zhejiang, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Environm Resources & Soil Fertilizers, Hangzhou 310021, Zhejiang, Peoples R China

3.Zhejiang Inst Geol Survey, Hangzhou 311203, Zhejiang, Peoples R China

4.Hong Kong Baptist Univ, Dept Geog, Kowloon Tong, Hong Kong, Peoples R China

5.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

关键词： Multivariate statistics; Paddy soils; Potential sources; Potentially toxic elements; Risk assessment

期刊名称：ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH （ 影响因子：4.223； 五年影响因子：4.306 ）

ISSN： 0944-1344

年卷期： 2019 年 26 卷 23 期

页码：

收录情况： SCI

摘要： The contamination of combined urban and rural area is a growing environmental issue due to rapid industrialization in China. This study investigated the eight potentially toxic elements (PTEs) arsenic (As), lead (Pb), cadmium (Cd), mercury (Hg), chromium (Cr), copper (Cu), nickel (Ni), and zinc (Zn) in paddy fields in a combined urban and rural area in Shaoxing city, Zhejiang province. Concentrations of the PTEs were determined in 60 topsoil samples (0-20cm) collected from paddy fields in a combined urban and rural area in Shaoxing city, Zhejiang province, southeast China. The average contents of Pb, Cu, Zn, Cd, Hg, and As in the paddy soils increased by 23.7, 6.9, 17.0, 79.8, 62.5, and 47.9%, respectively, relative to their corresponding natural background concentrations. The mean contents of Cr and Ni did not exceed their background values. Multivariate statistical and geostatistical methods were used to distinguish between the PTEs (Cd, As, Pb, Zn, and Hg) contaminating the soils of the study area from those (Cr, Cu, and Ni) at background concentrations. About 17.2% of the soils were moderately polluted with PTEs as a result of urbanization. The results may be useful to policy makers in agricultural and urban management.

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