NDLI: Anomalous abundance and redistribution patterns of rare earth elements in soils of a mining area in Inner Mongolia, China

Content Provider	Springer Nature Link
Author	Wang, Lingqing Liang, Tao
Copyright Year	2016
Abstract	The Bayan Obo Mine, the largest rare earth element (REE) deposit ever found in the world, has been mined for nearly 60 years for iron and rare earth elements. To assess the influences of mining activities on geochemical behavior of REEs in soils, 27 surface soil samples and three soil profile samples were collected from different directions in the vicinity of the mine area. The total concentrations of REEs in surface soils varied from 149.75 to 18,891.81 mg kg$^{−1}$ with an average value of 1906.12 mg kg$^{−1}$, which was apparently higher than the average values in China (181 mg kg$^{−1}$). The order of the average concentrations of individual REEs in surface soils was similar to that in Bayan Obo ores, which confirmed that the concentration and distribution of REEs in the soils was influenced by the mining activities. The concentrations of single REE in the soil profiles showed a similar trend with depth with an increase at 0–25 cm section, then decreased and remained relatively stable in the deep part. The normalized curves inclined to the right side, showing the conspicuous fractionation between the light and heavy REEs, which supported by the North American Shale Composite (NASC) and Post-Archean Australian Shale (PAAS) normalized concentration ratios calculated for selected elements (La$_{ N }$/Yb$_{ N }$, La$_{ N }$/Sm$_{ N }$, Gd$_{ N }$/Yb$_{ N }$). Slight positive Ce anomaly and negative Eu anomaly were also observed.
Starting Page	11330
Ending Page	11338
Page Count	9
File Format	PDF
ISSN	09441344
Journal	Environmental Science and Pollution Research
Volume Number	23
Issue Number	11
e-ISSN	16147499
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-03-02
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Rare earth element Soil Bayan Obo Mine Enrichment Mining activities Environment Environmental Chemistry Ecotoxicology Environmental Health Atmospheric Protection/Air Quality Control/Air Pollution Waste Water Technology Water Pollution Control Water Management Aquatic Pollution
Content Type	Text
Resource Type	Article
Subject	Environmental Chemistry Health, Toxicology and Mutagenesis Pollution Medicine

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