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Volume 7, Issue 6, December 2018, Page: 294-300
Assessment of Heavy Metal Contents and Pollution Risk in Reclaimed Soils of a Bauxite Mine
Nie Xingshan, Institute of Shanxi Soil and Water Conservation, Taiyuan, China
Received: Sep. 19, 2018;       Accepted: Dec. 4, 2018;       Published: Dec. 28, 2018
DOI: 10.11648/      View  916      Downloads  180
A study on the contents and pollution state of heavy metals in the soils at the Xiaoyi Bauxite Mine in Shanxi, China was conducted to provide a scientific basis for understanding and evaluating the risks of heavy metal pollution in reclaimed soils in mining areas. The contents of Cd, Cr, Cu, Pb, As, and Ni were analyzed by inductively coupled plasma mass spectrometry (ICP-MS), and evaluated with respect to the changes in their characteristics over different reclamation years. Using a single factor index and the Nemerow Pollution Index, the potential degree and risk of pollution were assessed. The mean concentration of Cd was 5.19 mg/kg, which exceeds the 0.3 mg/kg national standard in China by 17 times, while the concentrations of other elements did not exceed the national standard and there was no apparent pollution risk. With the extension of the reclamation time, the contents of Cd increased in the 0–15-cm layer and decreased in the 15–30-cm layer. Cadmium possessed the highest single pollution index, and exceeded the severe pollution level (Level 5), while the other five elements were at safe levels (i.e., lower than Level 1). The Nemerow Pollution Index ranged from 12.08–13.14, with an average of 12.43, and exceeded Level 5 pollution by 3–4 times, indicating a severe level of pollution. The soil being used to reclaim the mine was the main source of pollution, with the contents of six heavy metal elements exceeding the national standards. The soils in the reclamation area contain Cd pollution from the resource soil, manure, and dust. Therefore, for mine reclamation, the quality of the soil being used to reclaim the land should been stringently control.
Reclamation, Cd, Heavy Metal, Single Factor Index, Nemerow Pollution Index
To cite this article
Nie Xingshan, Assessment of Heavy Metal Contents and Pollution Risk in Reclaimed Soils of a Bauxite Mine, Earth Sciences. Vol. 7, No. 6, 2018, pp. 294-300. doi: 10.11648/
Copyright © 2018 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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