Distribution of heavy metals and metalloids in bulk and particle size fractions of soils from coal-mine brownfield and implications on human health

Heavy metals (HMs) and metalloids migrate into their surroundings, thus increasing environmental risks and threatening human health. Current studies on coal-mine brownfields, however, have not thoroughly investigated soil-associated HMs and metalloids produced by coal mining. Therefore, this study e...

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Bibliographic Details
Published in:Chemosphere (Oxford) 2017-04, Vol.172, p.505-515
Main Authors: Li, Hongxia, Ji, Hongbing, Shi, Chunjing, Gao, Yang, Zhang, Yan, Xu, Xiangyu, Ding, Huaijian, Tang, Lei, Xing, Yuxin
Format: Article
Language:English
Subjects:
Adult
Arsenic - analysis
Brownfield
Cadmium - analysis
Child
China
Coal
Coal mine
Coal Mining
Copper - analysis
Dietary Fiber
Ecology
Environmental Exposure
Environmental Monitoring - methods
Environmental Pollutants - analysis
Geography
Heavy metals
Human health
Humans
Mercury - analysis
Metalloids
Metals, Heavy - analysis
Particle Size
Risk Assessment
Soil
Soil Pollutants - analysis
Soils
Zinc - analysis
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Summary:Heavy metals (HMs) and metalloids migrate into their surroundings, thus increasing environmental risks and threatening human health. Current studies on coal-mine brownfields, however, have not thoroughly investigated soil-associated HMs and metalloids produced by coal mining. Therefore, this study explored the spatial and particle fraction distribution and human health implications of HMs and metalloids. The soil-associated HMs and metalloids are Arsenic (As), Cadmium (Cd), Chromium (Cr), Copper (Cu), Mercury (Hg), Manganese (Mn), Nickel (Ni), Lead (Pb), Scandium (Sc), Titanium (Ti) and Zinc (Zn). Results showed that Cd, Cu, Pb, and Ni were enriched in bulk soils. Cadmium, Cu and Pb from anthropogenic source were mainly found at entrance roadsides and in sites closest to coal mines. HMs and metalloids primarily accumulated in fine fractions (
ISSN:0045-6535
1879-1298
DOI:10.1016/j.chemosphere.2017.01.021