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	Geochemical fractions of rare earth elements in soil around a mine tailing in Baotou, China
	Wang L. Q.; Liang, T.
	2015
关键词	bayan obo surface soils phosphorus deposits sediments province metals region area
英文摘要	Rare earth mine tailing dumps are environmental hazards because tailing easily leaches and erodes by water and wind. To assess the influence of mine tailing on the geochemical behavior of rare earth elements (REEs) in soil, sixty-seven surface soil samples and three soil profile samples were collected from different locations near China's largest rare earth mine tailing. The total concentration of REEs in surface soils ranged from 156 to 5.65 x 10(4) mg.kg(-1) with an average value of 4.67 x 10(3) mg.kg(-1), which was significantly higher than the average value in China (181 mg.kg(-1)). We found obvious fractionation of both light and heavy REEs, which was supported by the North American Shale Composite (NASC) and the Post-Archean Average Australian Shale (PAAS) normalized concentration ratios calculated for selected elements (La-N/Yb-N, La-N/Sm-N and Gd-N/Yb-N). A slightly positive Ce anomaly and a negative Eu anomaly were also found. For all 14 REEs in soils, enrichment was intensified by the mine tailing sources and influenced by the prevailing wind.
出处	Scientific Reports
卷	5
收录类别	SCI
语种	英语
ISSN号	2045-2322
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38493]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Wang L. Q.,Liang, T.. Geochemical fractions of rare earth elements in soil around a mine tailing in Baotou, China. 2015.

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