The assessment on the heavy metal pollution and health risks in the Liujiang River under the Xijiang River region

The purpose of this study is to explore the degree and spatial distribution of dust heavy metal pollution in Tianshui City, the health risks, and the sources of heavy metals. The geoaccumulation index and health risk assessment are used to study pollution levels and human health risks, and Cu, Zn, and Pb pollution are found to be serious. The total exposure of children to dust and heavy metals is 8.329 × 10−3 mg·kg−1·d−1, which is 4.66 times that of adults. The effect of carcinogenic heavy metal exposure is more significant for adults than for children. The total non-carcinogenic risk quotient to children via multiple pathways is 2.1690, which is higher than that of adults. Children’s Pb non-carcinogenic risk quotient is 4.79 times that of adults, and children are more sensitive than adults to the health risks of Pb pollution. The GeoDetector and Unmix 6.0 models are used for source analysis, revealing that Zn, Pb, and As pollution originate primarily from urban transportation systems, V is sourced from soil-forming parent materials, and Mn, Ni, Cu, and Co arise from mixed sources. Therefore, the treatment of heavy metal pollution in cities needs to focus more on the urban transportation system.

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Assessment of Heavy Metal Pollution and Health Risks in the Soil-Plant-Human System in the Yangtze River Delta, China

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph14091042 ◽

2017 ◽

Vol 14 (9) ◽

pp. 1042 ◽

Cited By ~ 90

Author(s):

Bifeng Hu ◽

Xiaolin Jia ◽

Jie Hu ◽

Dongyun Xu ◽

Fang Xia ◽

...

Keyword(s):

Heavy Metal ◽

Health Risks ◽

Metal Pollution ◽

Heavy Metal Pollution ◽

Yangtze River ◽

Yangtze River Delta ◽

River Delta ◽

The Yangtze River ◽

Human System ◽

The Yangtze River Delta

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Evaluation of Heavy Metal Pollution in Shallow Groundwater of Farmland in Huaibei Plain, China

E3S Web of Conferences ◽

10.1051/e3sconf/202126702009 ◽

2021 ◽

Vol 267 ◽

pp. 02009

Author(s):

Yong Zhang ◽

Xuanxia Wang

Keyword(s):

Heavy Metal ◽

Health Risk ◽

Health Risks ◽

Metal Pollution ◽

Heavy Metal Pollution ◽

Shallow Groundwater ◽

Pollution Index ◽

Pollution Level ◽

Index Method ◽

Comprehensive Index

In order to understand the characteristics of heavy metal pollution in shallow groundwater in farmland in Huaibei Plain, 69 samples were collected from typical farmland areas in Xiaoxian County to determine the content of heavy metal elements such as Cr, Zn, Cu, Cd, and Ni. The single-factor pollution index method and Nemerow comprehensive index method are used to evaluate and analyze the pollution degree and the health risk assessment method is used to explore the health risk level. The results show that the concentrations of Cr, Zn, Cu, Cd and Ni were respectively 1.27μg∙L-1~268.78μg∙L-1, 0.45μg∙L-1~ 266.1μg∙L-1, 1.77μg∙L-1~ 29.8μg∙L-1, 0.10μg∙L-1~ 21.54μg∙L-1 and 0.9μg∙L-1~ 252.85μg∙L-1. The Nemerow comprehensive index of each heavy metal element is 0.031~5.507, and the pollution degree is Ni>Cr>Cd>Zn>Cu. The Nemerow comprehensive pollution index of each sampling point is 0.251~9.325, with an average value of 1.934. The overall value is 9.523, and the pollution level is extremely poor. The overall health risk is at a risk-free health level. There are 19 samples which the carcinogenic risk index of the Cr is greater than 10-4, and the number of samples with health risks accounts for 27.5%. Cr is the main source of heavy metal health risks in shallow groundwater in farmland.

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