ORIGINAL RESEARCH
Soil Heavy Metal Pollution and Ecological Risk
Health Risk Assessment in Gengzhen Town, China
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1
Harbin Center for Integrated Natural Resources Survey, China Geological Survey, Harbin 150086, P.R. China
2
Observation and Research Station of Earth Critical Zone in Black Soil, Harbin, Ministry of Natural Resources
150086, P.R. China
3
Shenyang Laboratory of national gemstone testing center, Shenyang 110034, P.R. China
4
Shenyang Center of Geological Survey, CGS, Shenyang 110034, P.R. China
Submission date: 2025-01-13
Final revision date: 2025-08-07
Acceptance date: 2025-09-13
Online publication date: 2025-11-19
Corresponding author
Zhuoan Sun
Shenyang Laboratory of national gemstone testing center, Shenyang 110034, P.R. China
Jianheng Wang
Shenyang Center of Geological Survey, CGS, Shenyang 110034, P.R. China
Chen Hu
Harbin Center for Integrated Natural Resources Survey, China Geological Survey, Harbin 150086, P.R. China
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ABSTRACT
Excessive heavy metals in soil pose ecological and health risks. In order to prevent pollutants
from harming human health, Gengzhen Town, Wutai County, China, was selected as the research
area. The health risk assessment model (BHRA), potential ecological hazard index (RI), and land
accumulation index (Igeo) were used to evaluate the pollution and risk of heavy metals in the soil
of the research area. The assessment shows that there is slight pollution of heavy metals in the soil
of Gengzhen Town, with the main influencing elements being Cd, Cr, As, Ni, and Pb; the ecological
risk is mild, ranging from 69.56 to 120.49; Cr, As, and Pb pose significant non-carcinogenic health
threats to children; the As element poses a carcinogenic risk to both adults and children, while the Cd
element poses a carcinogenic risk only to children; The average carcinogenic risk index is between 10-6
and 10-4, which meets China’s soil health standards. It is necessary to raise awareness and draw attention.
The evaluation of health risks related to heavy metals in soil is beneficial for people to reasonably
prevent risks and scientifically utilize land, playing a wide-ranging guiding role.