昆明市土壤重金属污染特征及其生态与健康风险评价

汪洁; 龚竞; 刘雨佳; 于淼; 王炜皓; 李梦莹; 徐武美; 向萍

doi:10.12187/2022.04.016

August 2022

Article Contents

WANG Jie, GONG Jing, LIU Yujia, et al. Ecological and health risk assessment of heavy metals in urban soils from a typical southwest capital city[J]. Journal of Light Industry, 2022, 37(4): 118-126. doi: 10.12187/2022.04.016

Citation: WANG Jie, GONG Jing, LIU Yujia, et al. Ecological and health risk assessment of heavy metals in urban soils from a typical southwest capital city[J]. Journal of Light Industry, 2022, 37(4): 118-126. doi: 10.12187/2022.04.016 shu

Ecological and health risk assessment of heavy metals in urban soils from a typical southwest capital city

WANG Jie ¹ ,
GONG Jing ² ,
LIU Yujia ¹ ,
YU Miao ¹ ,
WANG Weihao ¹ ,
LI Mengying ¹ ,
XU Wumei ³ ,
XIANG Ping ¹

1. Institute of Environmental Remediation and Human Health, School of Ecology and Environment, Southwest Forestry University, Kunming, 650224, China;
2. Student affairs office, Southwest Forestry University, Kunming, 650224, China;
3. College of Energy and Environmental Science, Yunnan Normal University, Kunming 650500, China

Received Date: 2021-06-21
Accepted Date: 2021-12-25

Abstract

Concentrations of 8 heavy metals (Cd, Cr, As, Pb, Zn, Mn, Cu, Ni) in soils from the living quarters of four various administrative districts of Kunming were determined. Pollution levels and ecological & health risk were assessed by index of geo-accumulation (I_geo), the potential ecological risk index (RI) and human health risk assessment in the study. Results showed that all heavy metals except Cr and Ni exceeded their background values. All of the samples’ heavy mental concentrations were lower than the risk screening values for concentration of development land in the national soil environment quality standards(GB 36600—2018). The index of geo-accumulation (I_geo) data showed Zn>Cd>Cu>Mn>Pb>Ni>As>Cr, and the pollution of Zn and Cd reached the moderate levels. Potential ecological risk index (RI) results showed Cd>Ni>Cu>As>Pb>Mn>Cr>Zn, in which Cd had a strong potential ecological risk, indicating a strong ecological risk, the comprehensive ecological risk index of the study area reached the medium ecological risk level. The non-carcinogenic risk HI of soil heavy metals in Kunming City for adults and children were lower than 1, and the non-carcinogenic risk of children was higher than that of adults; the carcinogenic risk to children and adults was within the acceptable range for humans. However, since the current health risk model lacked reference values for carcinogenic slope factors for hand-to-mouth intake and skin contact, it might underestimate the actual carcinogenic risk of heavy metals in the soil.
- urban soil,
- heavy metals contamination,
- ecological risk assessment,
- health risk assessment
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Ecological and health risk assessment of heavy metals in urban soils from a typical southwest capital city

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