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Health risks of heavy metal exposure through vegetable consumption near a large-scale Pb/Zn smelter in central China
Xinyu Li;  Zhonggen Lia;  Che-Jen Lin;  Xiangyang Bi;  Jinling Liu;   Xinbin Feng;  Hua Zhang;  Ji Chen;  Tingting Wu
2018
Source PublicationEcotoxicology and Environmental Safety
Volume161Pages:99-110
Abstract

Smelting of nonferrous metals is an important source of heavy metals in surface soil. The crops/vegetables grown on contaminated soil potentially impose adverse effects on human health. In this study, the contamination level of five heavy metals (Hg, Pb, Zn, Cd and Cu) in ten types of vegetables grown nearby a large scale Pb/Zn smelter in Hunan Province, China and the health risk associated with their consumption are assessed. Based on the data obtained from 52 samples, we find that Pb and Cd contributed to the greatest health risk and leafy vegetables tend to be more contaminated than non-leafy vegetables. Within 4 km radius of the smelter, over 75% of vegetable samples exceeded the national food standard for Pb; over 47% exceeded the Cd standard; and 7% exceeded the Hg standard. Heavy metal concentrations in vegetables measured within the 4 km radius are on average three times more elevated compared to those found at the control area 15 km away. Heavy metals in vegetables have dual sources of root absorption from soil and leaf adsorption from atmosphere. Health risk in terms of the hazard index (HI) at contaminated areas are 3.66 and 3.14 for adults and children, respectively, suggesting adverse health effects would occur. HI for both groups are mainly contributed by Pb (48%) and Cd (40%). Fortunately, vegetable samples collected at the control area are considered safe to consume.

KeywordHeavy Metal Vegetable Health Risk Pb/zn Smelting
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.gyig.ac.cn/handle/42920512-1/8843
Collection环境地球化学国家重点实验室
Affiliation1.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Center for Advances in Water and Air Quality, Lamar University, Beaumont, TX, USA
4.Department of Civil and Environmental Engineering, Lamar University, Beaumont, TX, USA
5.State Key Laboratory of Biogeology and Environmental Geology, School of Earth Sciences, China University of Geosciences, Wuhan 430074, China
Recommended Citation
GB/T 7714
Xinyu Li;Zhonggen Lia;Che-Jen Lin;Xiangyang Bi;Jinling Liu; Xinbin Feng;Hua Zhang;Ji Chen;Tingting Wu. Health risks of heavy metal exposure through vegetable consumption near a large-scale Pb/Zn smelter in central China[J]. Ecotoxicology and Environmental Safety,2018,161:99-110.
APA Xinyu Li;Zhonggen Lia;Che-Jen Lin;Xiangyang Bi;Jinling Liu; Xinbin Feng;Hua Zhang;Ji Chen;Tingting Wu.(2018).Health risks of heavy metal exposure through vegetable consumption near a large-scale Pb/Zn smelter in central China.Ecotoxicology and Environmental Safety,161,99-110.
MLA Xinyu Li;Zhonggen Lia;Che-Jen Lin;Xiangyang Bi;Jinling Liu; Xinbin Feng;Hua Zhang;Ji Chen;Tingting Wu."Health risks of heavy metal exposure through vegetable consumption near a large-scale Pb/Zn smelter in central China".Ecotoxicology and Environmental Safety 161(2018):99-110.
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