Investigating Heavy Metal Pollution in Mining Brownfield and Its Policy Implications: A Case Study of the Bayan Obo Rare Earth Mine, Inner Mongolia, China

Environmental Management
Yuxue Pan, Haitao Li

Abstract

The rapid urbanization of China and associated demand for land resources necessitates remediation, redevelopment, and reclamation of contaminated soil. Before these measures are taken, a basic investigation and inventory of heavy metal (HM) pollution levels in contaminated soil is necessary for establishing and implementing the redevelopment plan. In the present study, to identify the policy implications of inventorying and mapping HM pollution of soil in brownfields throughout China, the Bayan Obo giant rare earth element (REE)-Nb-Fe ore deposit of Baotou in Inner Mongolia, China, which is the largest REE mineral deposit in the world, was taken as a case study. Soil samples from 24 sites in Bayan Obo mining area (MA) and 76 sites in mine tailing area (TA) were collected for determining contents of soil HMs (Cr, Cd, Pb, Cu, and Zn). The results showed that the average concentrations of Cr, Cd, Pb, Cu, and Zn in both MA and TA were all higher than their corresponding background values for Inner Mongolia but lower than the Class II criteria of the National Soil Quality Standards of China (GB 15618-1995). Enrichment factor (EF) analysis of the soil samples indicated that the soil in the brownfield sites was highly enriched with Cr...Continue Reading

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Citations

Aug 6, 2016·Environmental Science and Pollution Research International·Siti Merryan DiamiZafira Madzin
Oct 25, 2016·Environmental Science and Pollution Research International·Faradiella Mohd KusinMohd Syakirin Md Z
Aug 6, 2016·Organic & Biomolecular Chemistry·Colette KurthMarkus Nett
Apr 4, 2017·Environmental Science and Pollution Research International·Jie TangWenting Li
Jan 5, 2021·Environmental Geochemistry and Health·Nabila Syuhada Mohd IshaVerma Loretta M Molahid

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