Health risk assessment of heavy metal exposure to street dust in the zinc smelting district, Northeast of China

	Health risk assessment of heavy metal exposure to street dust in the zinc smelting district, Northeast of China
其他题名	论文其他题名
	Zheng N.; Liu J. H.; Wang Q. C.; Liang Z. Z.
	2010
发表期刊	Science of the Total Environment
ISSN	0048-9697
卷号	408 期号:4 页码:726-733
摘要	Heavy 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.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26167
专题	中科院长春光机所知识产出
推荐引用方式 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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