title: Pollution characteristics and health risk assessment of heavy metals in street dusts from different functional areas in Beijing, China.
abstract: Street dusts from Heavy Density Traffic Area, Residential Area, Educational Area and Tourism Area in Beijing, China, were collected to study the distribution, accumulation and health risk assessment of heavy metals. Cr, Cu, Zn, Cd and Pb concentrations were in higher concentrations in these four locations than in the local soil background. In comparison with the concentrations of selected metals in other cities, the concentrations of heavy metals in Beijing were generally at moderate or low levels. Ni, Cu, Zn and Pb concentrations in the Tourism Area were the highest among four different areas in Beijing. A pollution assessment by Geoaccumulation Index showed that the pollution level for the heavy metals is in the following order: Cd>Pb>Zn>Cu>Cr>Ni. The Cd levels can be considered "heavily contaminated" status. The health risk assessment model that was employed to calculate human exposure indicated that both non-carcinogenic and carcinogenic risks of selected metals in street dusts were generally in the low range, except for the carcinogenic risk from Cr for children.
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China; State Key Laboratory of Water Environment Simulation, School of Environment, Beijing Normal University, Beijing 100875, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Wei
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China. Electronic address: gaosky34@hotmail.com.
authors.forename: Bo
authors.initials: B
authors.lastname: Gao
authors.affiliation: College of Environment Science and Engineering, Kunming University of Science and Technology, Kunming, 650500, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China.
authors.forename: Huaidong
authors.initials: H
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing 100038, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Lu
mesh_terms: D000328:Adult; D000393:Air Pollutants; D002648:Child; D002681:China; D002947:Cities; D004391:Dust / Q000032:analysis*; D004784:Environmental Monitoring; D006801:Humans; D013058:Mass Spectrometry; D019216:Metals, Heavy / Q000032:analysis*; D008962:Models, Theoretical; D018570:Risk Assessment
chemical_list: D000393:Air Pollutants; D004391:Dust; D019216:Metals, Heavy
keywords: Beijing; Health risk assessment; Heavy metals; Pollution assessment; Street dusts