Health risk assessment and potential sources of metals in riparian soils of the Wujiang River, China
文献类型： 外文期刊
作者： Cai, Shenwen 1 ; Shen, Ziwei 2 ; Zhou, Shaoqi 3 ; Wang, Qinghe 1 ; Cheng, Junwei 1 ; Yan, Xiong 1 ; Tan, Mingjie 1 ; Tu, Guojing 1 ; Cen, Yi 1 ;
作者机构： 1.Zunyi Normal Univ, Coll Resources & Environm, Zunyi, Peoples R China
2.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan, Peoples R China
3.Guizhou Univ, Coll Resources & Environm Engn, Guiyang, Peoples R China
关键词： Wujiang River; Riparian soils; Metals; Risk assessment; Source identification
期刊名称：ENVIRONMENTAL GEOCHEMISTRY AND HEALTH （ 影响因子：4.2； 五年影响因子：4.4 ）
ISSN： 0269-4042
年卷期： 2024 年 46 卷 3 期
页码：
收录情况： SCI
摘要： In order to understand the pollution status of metals in the riparian soils along the Wujiang River, 26 sampling sites in the mainstream and tributary streams were selected for investigation. The geo-accumulation index (Igeo), Nemerow integrated pollution index, and potential ecological risk index were applied to evaluate the contamination status and ecological risks of metals. Results revealed that the average concentrations of As, Cd, Cr, Cu, Mn, Ni, Pb, and Zn were 12.20, 0.51, 84.01, 57.42, 922.57, 38.37, 38.06, and 127.82 mg/kg, respectively. The metal contamination degree and ecological risks in the upper reaches were significantly higher than those in the middle and lower reaches of the Wujiang River. Cd was the dominant contamination metal. Significant non-carcinogenic and carcinogenic risks of metals were found in children based on the hazard index and carcinogenic risk. As was the main non-carcinogenic and carcinogenic pollutant metal in both adults and children. According to principal component analysis, hierarchical clustering analysis, and absolute principal component scores-multiple linear regression, anthropogenic sources (mining and agricultural activities) contributed most to Zn, Pb, Cr, Cd, Cu, and Ni, with contribution rates of 89.14, 82.32, 74.46, 72.12, 68.52, and 61.02%, respectively. Natural sources contributed most to Mn, with a contribution rate of 83.07%. Unidentified sources contributed most to As, with a contribution rate of 47.27%.
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