title: Pollution characteristics and risk assessment of human exposure to oral bioaccessibility of heavy metals via urban street dusts from different functional areas in Chengdu, China.
abstract: Urban street dusts were collected in commercial area (CA), traffic area (TA), educational area (EA), residential area (RA) and parks area (PA) of Chengdu, China, to investigate the concentrations of heavy metals (Pb, Zn, Cu, Ni, Cd and Cr), and analyzed to evaluated possible sources and health risk assessment. The average concentrations (mg/kg) of Pb (82.3), Zn (296), Cu (100), Cd (1.66) and Cr (84.3) in urban street dusts were all higher than the local soil background values. The concentrations of heavy metals in each functional area could be classified as follows: CA>TA>RA>EA>PA. Principal component analysis and Cluster analysis showed mainly derived from the mixed sources of nature and traffic (51.7%). The results of health risk assessment showed no non-carcinogenic and carcinogenic risks of the metals for inhabitants. However, higher concentrations and oral bioaccessibility of the heavy metals in the dusts from CA and TA, indicating there was more health risks to the inhabitants in than that in other functional areas.
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu 611130, China.
authors.forename: Han-Han
authors.initials: HH
authors.lastname: Li
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu 611130, China.
authors.forename: Liu-Jun
authors.initials: LJ
authors.lastname: Chen
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu 611130, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Yu
authors.affiliation: Guangxi Academy of Fishery Sciences, Nanning 530021, China.
authors.forename: Zhong-Bao
authors.initials: ZB
authors.lastname: Guo
authors.affiliation: Dalian Sanyi Bioengineering Research Institute, Dalian 116036, China.
authors.forename: Chun-Qiao
authors.initials: CQ
authors.lastname: Shan
authors.affiliation: Department of Environmental Engineering, College of Food and Biological Engineering, Jimei University, Xiamen 361021, China.
authors.forename: Jian-Qing
authors.initials: JQ
authors.lastname: Lin
authors.affiliation: South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China.
authors.forename: Yang-Guang
authors.initials: YG
authors.lastname: Gu
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu 611130, China.
authors.forename: Zhan-Biao
authors.initials: ZB
authors.lastname: Yang
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu 611130, China.
authors.forename: Yuan-Xiang
authors.initials: YX
authors.lastname: Yang
authors.affiliation: School of Life Sciences, Sichuan Agricultural University, Yaan 625014, China.
authors.forename: Ji-Rong
authors.initials: JR
authors.lastname: Shao
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu 611130, China. Electronic address: zhuxm007@sina.com.
authors.forename: Xue-Mei
authors.initials: XM
authors.lastname: Zhu
authors.affiliation: College of Environment, Sichuan Agricultural University, Chengdu 611130, China. Electronic address: chengzhang2001@foxmail.com.
authors.forename: Zhang
authors.initials: Z
authors.lastname: Cheng
mesh_terms: D002681:China; D002947:Cities; D004391:Dust; D004781:Environmental Exposure / Q000032:analysis*; D004784:Environmental Monitoring; D006801:Humans; D019216:Metals, Heavy / Q000032:analysis*; D018570:Risk Assessment; D012989:Soil Pollutants / Q000032:analysis
chemical_list: D004391:Dust; D019216:Metals, Heavy; D012989:Soil Pollutants
keywords: Functional areas; Heavy metals; Oral bioaccessibility; Risk assessment; Urban street dust