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Title: Pollution characteristics and health risk assessment of airborne heavy metals collected from Beijing bus stations
Authors: Zheng, X
Zhao, W
Yan, X
Shu, T
Xiong, Q
Chen, F
Issue Date: 2015
Source: International journal of environmental research and public health, Aug. 2015, v. 12, no. 8, p. 9658-9671
Abstract: Airborne dust, which contains high levels of toxic metals, is recognized as one of the most harmful environment component. The purpose of this study was to evaluate heavy metals pollution in dustfall from bus stations in Beijing, and to perform a risk assessment analysis for adult passengers. The concentrations of Cd, Co, Cr, Cu, Mo, Ni, Pb, V and Zn were determined by inductively coupled plasma mass spectroscopy (ICP-MS). The spatial distribution, pollution level and potential health risk of heavy metals were analyzed by Geographic Information System (GIS) mapping technology, geo-accumulation index and health risk assessment model, respectively. The results indicate that dust samples have elevated metal concentrations, especially for Cd, Cu, Pb and Zn. The nine metals can be divided into two categories in terms of spatial distribution and pollution level. Cd, Cr, Cu, Mo, Pb and Zn reach contaminated level and have similar spatial patterns with hotspots distributed within the Fifth Ring Road. While the hot spot areas of Co and V are always out of the Fifth Ring Road. Health risk assessment shows that both carcinogenic and non-carcinogenic risks of selected metals were within the safe range.
Keywords: Bus station
Health risk
Heavy metals
Publisher: Molecular Diversity Preservation International (MDPI)
Journal: International journal of environmental research and public health 
ISSN: 1661-7827
EISSN: 1660-4601
DOI: 10.3390/ijerph120809658
Rights: © 2015 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (
The following publication Zheng, X., Zhao, W., Yan, X., Shu, T., Xiong, Q., & Chen, F. (2015). Pollution characteristics and health risk assessment of airborne heavy metals collected from Beijing bus stations. International Journal of Environmental Research and Public Health, 12(8), (Suppl. ), 9658-9671 is available at
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