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Identification of trace metal pollution in urban dust from kindergartens using magnetic, geochemical and lead isotopic analyses
Zongmin Zhu;  Guangyi Sun;  Xiangyang Bi;  Zhonggen Li;  Genhua Yu
2013
发表期刊Atmospheric Environments
卷号77页码:9-15
摘要

In the present study, magnetic measurements were combined with geochemical analysis and stable Pb isotopic ratios to reveal the distribution and origination of trace metal pollutants in kindergarten dusts from a typical urban environment of Wuhan, central China. The geoaccumulation index (Igeo) of magnetic properties was more prominent than those of individual metals. The magnetic susceptibility (MS) and trace metals (Zn, Pb, and Cu) in this study together with published results from other Chinese cities formed a liner relationship, suggesting that metal contaminants in Chinese urban areas had similar MS to metal ratios, which could be used as an indicator for identification of pollution sources between Chinese cities and the other Asian cities. Stable Pb isotopic ratios (1.1125–1.1734 for 206Pb/207Pb and 2.4457–2.4679 for 208Pb/207Pb) in the urban dusts from Wuhan were characterized by higher 208Pb component in comparison with those from other Chinese cities. This result combined with principal component analysis (PCA) indicated that metal pollutants in the dusts were derived from industrial activities and coal combustion, whereas the traffic emissions were no longer a predominant pollution source in urban environment. Our study demonstrated that environmental magnetic methods could not only reveal the overall situation of trace metal contamination, but also prove evidence in the identification of pollution sources.

关键词Environmental Magnetism trace Metals stable Pb Isotopes urban Dust source Identification
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/9423
专题环境地球化学国家重点实验室
作者单位1.State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
2.Hei Longjiang Institute of Geological Survey, Harbin 150036, China
3.Faculty of Earth Sciences, Northeast Petroleum University, Daqing 163318, China
4.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
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GB/T 7714
Zongmin Zhu;Guangyi Sun;Xiangyang Bi;Zhonggen Li;Genhua Yu. Identification of trace metal pollution in urban dust from kindergartens using magnetic, geochemical and lead isotopic analyses[J]. Atmospheric Environments,2013,77:9-15.
APA Zongmin Zhu;Guangyi Sun;Xiangyang Bi;Zhonggen Li;Genhua Yu.(2013).Identification of trace metal pollution in urban dust from kindergartens using magnetic, geochemical and lead isotopic analyses.Atmospheric Environments,77,9-15.
MLA Zongmin Zhu;Guangyi Sun;Xiangyang Bi;Zhonggen Li;Genhua Yu."Identification of trace metal pollution in urban dust from kindergartens using magnetic, geochemical and lead isotopic analyses".Atmospheric Environments 77(2013):9-15.
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