Temporal and Spatial Variation of Toxic Metal Concentrations in Cultivated Soil in Jiaxing, Zhejiang Province, China: Characteristics and Mechanisms
文献类型： 外文期刊
作者： Cao, Mengzhuo 1 ; Jia, Yanbo 2 ; Lu, Xin 1 ; Huang, Jinfa 3 ; Yao, Yanlai 1 ; Hong, Leidong 1 ; Zhu, Weijing 1 ; Wang, Weiping 1 ; Zhu, Fengxiang 1 ; Hong, Chunlai 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, Hangzhou 310021, Peoples R China
2.Hangzhou Inst Food & Drug Control, Hangzhou 310022, Peoples R China
3.Jiaxing Agr & Rural Bur, Jiaxing Soil & Fertilizer Plant Protect & Rural En, Jiaxing 314050, Peoples R China
4.Shanghai Huadi Environm Technol Co Ltd, Shanghai 201803, Peoples R China
关键词： agriculture; concentration; safe limits; national risk screening value; pollution
期刊名称：TOXICS （ 影响因子：3.9； 五年影响因子：4.2 ）
ISSN：
年卷期： 2024 年 12 卷 6 期
页码：
收录情况： SCI
摘要： The toxic metal (As, Cd, Cr, Cu, Hg, Ni, Pb, and Zn) pollution in 250 agricultural soil samples representing the urban area of Jiaxing was studied to investigate the temporal and spatial variations. Compared to the early 1990s, the pollution level has increased. Industry and urbanization were the main factors causing toxic metal pollution on temporal variation, especially the use of feed containing toxic metals. The soil types and crop cultivation methods are the main factors causing toxic metal pollution on spatial variation. Although the single-factor pollution indices of all the toxic metals were within the safe limits, as per the National Soil Environmental Quality Standard (risk screening value), if the background values of soil elements in Jiaxing City are used as the standard, the pollution index of all the elements surveyed exceeds 1.0, reaching a level of mild pollution. The soil samples investigated were heavily contaminated with toxic metal compounds, and their levels increased over time. This situation poses potential ecological and health risks.
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