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
文献类型: 外文期刊
作者: Li, Han-Han 1 ; Chen, Liu-Jun 1 ; Yu, Lin 1 ; Guo, Zhong-Bao 2 ; Shan, Chun-Qiao 3 ; Lin, Jian-Qing 4 ; Gu, Yang-Guang 5 ;
作者机构: 1.Sichuan Agr Univ, Coll Environm, Chengdu 611130, Peoples R China
2.Guangxi Acad Fishery Sci, Nanning 530021, Peoples R China
3.Dalian Sanyi Bioengn Res Inst, Dalian 116036, Peoples R China
4.Jimei Univ, Dept Environm Engn, Coll Food & Biol Engn, Xiamen 361021, Peoples R China
5.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China
6.Sichuan Agr Univ, Sch Life Sci, Yaan 625014, Peoples R China
关键词: Urban street dust;Heavy metals;Functional areas;Oral bioaccessibility;Risk assessment
期刊名称:SCIENCE OF THE TOTAL ENVIRONMENT ( 影响因子:7.963; 五年影响因子:7.842 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: 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 (823), Zn (296), Cu (100), Cd (1.66) and Cr (843) 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. (C) 2017 Published by Elsevier B.V.
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