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Contamination levels and human health risk assessment of toxic heavy metals in street dust in an industrial city in Northwest China
Jiang, Yufeng1; Shi, Leiping1; Guang, A-long1; Mu, Zhongfeng1; Zhan, Huiying2; Wu, Yingqin3
2018-10-01
发表期刊ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
ISSN0269-4042
卷号40期号:5页码:2007-2020
摘要This study investigated the content, distribution, and contamination levels of toxic metals (Cd, Cr, Cu, Pb, and Zn) in street dust in Lanzhou, an industrial city in Northwest China. Meanwhile, the risk these metals posed to the urban ecosystem and human health was also evaluated using the potential ecological risk index and human exposure model. Results showed that concentrations of these metals in the dust are higher than the background value of local soil, with Cu having the highest levels. The districts of Anning and Xigu had the most extreme levels of contamination, while Chengguan and Qilihe districts were lightly contaminated, which can be partly attributed to human activities and traffic densities. In comparison with the concentrations of selected metals in other cities, the concentrations of heavy metals in Lanzhou were generally at moderate or low levels. Heavy metal concentration increased with decreasing dust particle size. The pollution indices of Cr, Cd, Cu, Pb, and Zn were in the range of 0.289-2.09, 0.332-2.15, 1.38-6.21, 0.358-2.59, and 0.560-1.83 with a mean of 1.37, 1.49, 3.18, 1.48, and 0.897, respectively. The geo-accumulation index (I-geo) suggested that Zn in street dust was of geologic origin, while Cd, Cr, Pb, and Cu were significantly impacted by anthropogenic sources. The comprehensive pollution index showed that urban dust poses a high potential ecological risk in Lanzhou. Non-carcinogenic and carcinogenic effects due to exposure to urban street dust were assessed for both children and adults. For non-carcinogenic effects, ingestion appeared to be the main route of exposure to dust particles and thus posed a higher health risk to both children and adults for all metals, followed by dermal contact. Hazard index values for all studied metals were lower than the safe level of 1, and Cr exhibited the highest risk value (0.249) for children, suggesting that the overall risk from exposure to multiple metals in dust is low. The carcinogenic risk for Cd and Cr was all below the acceptable level (< 10(-6)).
关键词Street dust Heavy metal Pollution index Potential ecological risk Human exposure assessment
DOI10.1007/s10653-017-0028-1
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University
关键词[WOS]POLYCYCLIC AROMATIC-HYDROCARBONS ; ROAD DUST ; URBAN SOILS ; POLLUTION ; AREAS ; PATTERNS ; ELEMENTS ; LANZHOU ; SAMPLES
语种英语
资助项目National Natural Science Foundation of China[41363008] ; National Natural Science Foundation of China[41272147] ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University
资助者National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University ; Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University
WOS研究方向Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources
WOS类目Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources
WOS记录号WOS:000452158700024
出版者SPRINGER
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.iggcas.ac.cn/handle/132A11/90282
专题兰州油气中心
通讯作者Jiang, Yufeng
作者单位1.Lanzhou Jiaotong Univ, Sch Environm & Municipal Engn, Lanzhou 730070, Peoples R China
2.Lanzhou Univ Arts & Sci, Chem Engn Coll, Lanzhou 730070, Peoples R China
3.Chinese Acad Sci, Key Lab Petr Resources Res, Inst Geol & Geophys, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714
Jiang, Yufeng,Shi, Leiping,Guang, A-long,et al. Contamination levels and human health risk assessment of toxic heavy metals in street dust in an industrial city in Northwest China[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2018,40(5):2007-2020.
APA Jiang, Yufeng,Shi, Leiping,Guang, A-long,Mu, Zhongfeng,Zhan, Huiying,&Wu, Yingqin.(2018).Contamination levels and human health risk assessment of toxic heavy metals in street dust in an industrial city in Northwest China.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,40(5),2007-2020.
MLA Jiang, Yufeng,et al."Contamination levels and human health risk assessment of toxic heavy metals in street dust in an industrial city in Northwest China".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 40.5(2018):2007-2020.
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