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学科主题: Geosciences, Multidisciplinary; Soil Science
题名: Platinum-group and other traffic-related heavy metal contamination in road sediment, Guangzhou, China
作者: Zhong, LF ; Li, J ; Yan, W ; Tu, XL ; Huang, WX ; Zhang, XH
通讯作者: wyan@scsio.ac.cn
关键词: Enrichment factor ; Guangzhou ; Heavy metals ; Multivariate statistical analysis ; Platinum-group elements ; Road sediment
刊名: JOURNAL OF SOILS AND SEDIMENTS
发表日期: 2012
卷: 12, 期:6, 页:942-951
部门归属: [Zhong, Lifeng; Yan, Wen; Huang, Weixia; Zhang, Xiaohua] Chinese Acad Sci, S China Sea Inst Oceanol, CAS Key Lab Marginal Sea Geol, Guangzhou 510301, Guangdong, Peoples R China; [Li, Jie; Tu, Xianglin] Chinese Acad Sci, Guangzhou Inst Geochem, Guangzhou 510640, Peoples R China
项目归属: 海洋地质
摘要: Human exposure to particulate matter emitted from on-road motor vehicles includes complex mixtures of heavy metals from tyres, brakes, part wear, and resuspended road sediment. The purpose of this study was to determine the concentrations of 14 platinum-group and other traffic-related heavy metals in road sediment within the metropolitan area of Guangzhou, China, with a view to identifying their sources and assessing the extent of anthropogenic influence on heavy metal contamination of road sediment. Thirty-five samples of road sediment were collected. The concentrations of Cr, Mn, Ni, Cu, Zn, La, Ce, Mo, Cd, Pb, Ba, and Rh were measured by inductively coupled plasma-mass spectrometry. Pt and Pd were analyzed by isotopic dilution-inductively coupled plasma-mass spectrometry. Multivariate statistical analysis and enrichment factor methods were employed to identify the sources of these heavy metals and to assess anthropogenic influences on their occurrence. The mean concentrations of Pt, Pd, Rh, Cr, Mn, Ni, Cu, Zn, La, Ce, Mo, Cd, Pb, and Ba in the road sediment samples were 68.24, 93.15, 23.85, 147.5, 712.3, 47.24, 177.5, 1254, 47.50, 96.62, 4.91, 3.00, 198.1, and 641.3 ng g(-1), respectively. Very weak to significant linear positive correlations were found among the various heavy metals. The elemental composition of road sediment was dominated by five principal components. Three clusters were identified through cluster analysis, and enrichment factors were calculated relative to soils in China. The sources and degree of contamination of the heavy metals are discussed based on the results. The mean concentrations of heavy metals are higher than background values, especially for Pt, Pd, Rh, Cd, and Zn. Four main sources are identified: (1) Pt, Pd, and Rh were derived from traffic sources; (2) La, Ce, Mn, and Ba were derived mainly from natural sources; (3) Cr, Ni, Cu, Mo, Cd, and Pb showed mixed traffic-industry sources; and (4) Zn originated mainly from industrial sources. Enrichment factor analysis supported this source identification and further indicated that contamination of road sediment in Guangzhou is extremely high for Pt, Pd, and Rh; moderate to very high for Cd, Zn, Pb, Cu, and Mo; and minimal for Cr, Ni, La, Ce, and Ba.
语种: 英语
WOS记录号: WOS:000304160900013
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10339
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
Zhong, LF; Li, J; Yan, W; Tu, XL; Huang, WX; Zhang, XH.Platinum-group and other traffic-related heavy metal contamination in road sediment, Guangzhou, China,JOURNAL OF SOILS AND SEDIMENTS,2012,12(6):942-951
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