REVIEW PAPER
Status Assessment, Spatial Distribution and Health
Risk of Heavy Metals in Agricultural Soils Around
Mining-Impacted Communities in China
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1
School of Geography and Environmental Science, Guizhou Normal University, Guiyang , China
2
College of Resource and Environmental Engineering, Guizhou University, Guiyang , China
Submission date: 2020-02-07
Final revision date: 2020-05-14
Acceptance date: 2020-06-27
Online publication date: 2020-10-28
Publication date: 2021-01-20
Corresponding author
Ji Wang
School of Geography and Environmental Sciences, Guizhou Normal University, 550025, Guiyang, China
Pol. J. Environ. Stud. 2021;30(2):993-1002
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ABSTRACT
China holds diversified mineral resources, and long term mining activities can significantly affect
the enrichment of heavy metals (HMs) in agricultural soils. A systematic investigation and overall
macro-evaluation on HMs contamination in agricultural soils around mining-impacted communities
are urgently needed. International and China national databases were retrieved carefully with the search
criteria for articles published from 2007 to 2018. Ultimately, 92 articles fit the inclusion criteria and were
selected for further analysis. Based on the collected data, this study then discusses the overall status of
HMs concentrations in agricultural soils around the mining-impacted communities and evaluates the
pollution levels using the geoaccumulation index. To quantify the non-carcinogenic risks of HMs in
soils pose to human health via oral ingestion, the recommended model was applied in the process of
health risk assessment, along with Monte Carlo simulation and sensitivity analysis were performed. The
results revealed that HMs pollution concentrations and associated ecological risks posed by Cd, Pb and
Hg were more serious. Meanwhile, the spatial distribution characteristics suggested that HMs (except
for Hg) in southern China generally were severer than those in northern China. Based on the result of
human health risk assessment, Cd, As and Pb posed health risks to public in some agricultural sampling
sites. It should be noted that 34.02%, 32.99% and 30.93% of HI outputs for children, adults females and
males respectively was higher than the guideline value of 1, indicating that children were likely to have
an exceptionally sensitive of exposure to environmental contaminants because the unique physiological
characteristics and behavioral compared to adults. The results from this study may provide insights for
policymakers to develop pollution prevention measures and management strategies in China.