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Health risk assessment of heavy metal exposure to street dust in the zinc smelting district, Northeast of China
Alternative Title论文其他题名
Zheng N.; Liu J. H.; Wang Q. C.; Liang Z. Z.
2010
Source PublicationScience of the Total Environment
ISSN0048-9697
Volume408Issue:4Pages:726-733
AbstractHeavy metal contamination in the street dust due to metal smelting in the industrial district of Huludao city was investigated. Spatial distribution of Hg, Pb, Cd, Zn and Cu in the street dust was elucidated. Meanwhile, noncancer effect and cancer effect of children and adults due to exposure to the street dust were estimated. The maximum Hg, Pb, Cd, Zn and Cu contents in the street dust are 5.212, 3903, 726.2. 79,869, and 1532 ring kg(-1), and respectively 141, 181, 6724, 1257 and 77.4 times as high as the background values in soil. The trends for Hg, Pb, Cd, Zn and Cu are similar with higher concentrations trending Huludao zinc plant (HZP). The exponential equation fits quite well for the variations of Pb, Cd, Zn and Cu contents with distance from the pollution sources, but not for Hg. The biggest contribution to street dust is atmospheric deposition due to metal smelting, but traffic density makes slight contribution to heavy metal contamination. According to the calculation on Hazard Index (HI), in the case of noncancer effect, the ingestion of dust particles of children and adults in Huludao city appears to be the route of exposure to street dust that results in a higher risk for heavy metals, followed by dermal contact. The inhalation of resuspended particles through the mouth and nose is almost negligible. The inhalation of Hg vapour as the fourth exposure pathway to street dust is accounting for the main exposure. Children are experiencing the potential health risk due to HI for Pb larger than safe level (1) and Cd close to 1. Besides, cancer risk of Cd due to inhalation exposure is low. (C) 2009 Elsevier B.V. All rights reserved.
Indexed BySCI ; EI
Language英语
Document Type期刊论文
Identifierhttp://ir.ciomp.ac.cn/handle/181722/26167
Collection中科院长春光机所知识产出
Recommended Citation
GB/T 7714
Zheng N.,Liu J. H.,Wang Q. C.,et al. Health risk assessment of heavy metal exposure to street dust in the zinc smelting district, Northeast of China[J]. Science of the Total Environment,2010,408(4):726-733.
APA Zheng N.,Liu J. H.,Wang Q. C.,&Liang Z. Z..(2010).Health risk assessment of heavy metal exposure to street dust in the zinc smelting district, Northeast of China.Science of the Total Environment,408(4),726-733.
MLA Zheng N.,et al."Health risk assessment of heavy metal exposure to street dust in the zinc smelting district, Northeast of China".Science of the Total Environment 408.4(2010):726-733.
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