Source Analysis and Health Risk Assessment of Heavy Metals in Groundwater of Leizhou Peninsula

被引：0
|
作者：
Shi H.-H. [1 ]
Pan Y.-J. [1 ]
Zeng M. [2 ]
Huang C.-S. [2 ]
Hou Q.-Q. [1 ]
Pi P.-C. [1 ]
Peng H.-X. [1 ]
机构：
[1] School of Geography and Information Engineering, China University of Geosciences, Wuhan
[2] Wuhan Center of China Geological Survey, Wuhan
来源：
Huanjing Kexue/Environmental Science | 2021年 / 42卷 / 09期
关键词：
Groundwater; Heavy metals; Risk assessment; Source analysis;
D O I：
10.13227/j.hjkx.202101147
中图分类号：
学科分类号：
摘要：
Source identification and health risk assessment of heavy metals in groundwater is one of the key issues in China's new era of environmental management. In order to reveal the status, sources, and health risk of pollutants in groundwater of the Leizhou Peninsula, 44 groundwater samples were collected, and the concentrations and spatial distribution of Cr, Mn, Cu, Zn, As, Cd, Hg, and Pb were measured and analyzed. The sources of heavy metals in groundwater were then determined through correlation coefficient and principal component analysis. Finally, the health risk model was used to evaluate the different health risks associated with these heavy metals. The results showed that the average value of heavy metal elements in groundwater of the Leizhou Peninsula does not inferior to the class Ⅱ water quality standard(GB/T 14848-2017). However, As, Mn, and Cd do not meet the standard. The overall spatial distribution indicated obvious spatial differences, with higher values in the south than in the north. Heavy metal sources can be identified as three principal components (PCs). PC1 (Cu, Zn, Cd, and Pb) metals mainly originate from industrial, agricultural, and traffic sources. PC2 (Cr, Mn, and As) sources can be both natural and man-made, and PC3 (Hg) sources are primarily man-made. For the groundwater of the Leizhou Peninsula, the health risks of 8 metals are with the acceptable range, the carcinogenic risk of adults is higher than that of children, and the risk of drinking exposure is higher than that of skin exposure. The study shows that the environmental protection department should encourage the rational exploitation of groundwater resources and control the sources of pollution to reduce health risks. © 2021, Science Press. All right reserved.
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页码：4246 / 4256
页数：10
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