[1]SHI Ya-kun,LI Kai-rong,YAN Bao-huan.Distribution and Assessment of Heavy Metal Contamination in Weathered Soil in Sanlidong Coal Mine of Tongchuan[J].Research of Soil and Water Conservation,2012,19(01):187-191.
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Distribution and Assessment of Heavy Metal Contamination in Weathered Soil in Sanlidong Coal Mine of Tongchuan
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
19
Number of periods:
2012 01
Page number:
187-191
Column:
Public date:
2012-02-20
- Title:
- Distribution and Assessment of Heavy Metal Contamination in Weathered Soil in Sanlidong Coal Mine of Tongchuan
- Keywords:
- coal gangue; weathered soil; heavy metal; distribution; pollution level
- CLC:
- X833
- DOI:
- -
- Abstract:
- The research of distribution and assessment of heavy metal contamination can provide a scientific basis for pollution control and vegetation restoration. The contents of copper(Cu), chromium(Cr), cadmium(Cd), nickel(Ni), zinc(Zn) and plumbum(Pb) in weathered soil developed from coal gangue in Sanlidong coal mine of Tongchuan were measured. In this paper, the geoaccumulation index and potential ecological risk index were used to evaluate the soil pollution of gangue field. The results showed: the contents of heavy metals are higher and tend to be stable along with the length of stopping discharging the gangue increased, the terrain flatted and vegetation coverage increased. The accumulation of heavy metals was significant at the foot of the slopling land, the contents of heavy metals at the foot of slope were higher than the other sites. In the gangue field, the pollution of Cd was most severe, it was defined as moderate or lay particular stress degrees in the geoaccumulation index, and severe or extremely severe degrees in the potential ecological risk index; the pollution of Cu, Ni, Zn was mild, the pollution of Cr and Pb was slight, but some individual study areas were polluted mildly, and the level of pollution of all the five heavy metals were classified as light degrees by potential ecological risk index. Thus, it is necessary to prevent and control the heavy metal pollution for the gangue field.
- References:
-
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Last Update:
1900-01-01