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Distribution and pollution assessment of heavy metals in soil of relocation areas from the Danjiangkou Reservoir

Zhang, Lei ; Qin, Yan-Wen ; Zheng, Bing-Hui ; Shi, Yao ; Han, Chao-Nan

Huan jing ke xue= Huanjing kexue, January 2013, Vol.34(1), pp.108-15 [Tạp chí có phản biện]

ISSN: 0250-3301 ; PMID: 23487925 Version:1

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  • Nhan đề:
    Distribution and pollution assessment of heavy metals in soil of relocation areas from the Danjiangkou Reservoir
  • Tác giả: Zhang, Lei ; Qin, Yan-Wen ; Zheng, Bing-Hui ; Shi, Yao ; Han, Chao-Nan
  • Chủ đề: Environmental Monitoring ; Metals, Heavy -- Analysis ; Soil -- Chemistry ; Soil Pollutants -- Analysis ; Water Supply -- Analysis
  • Là 1 phần của: Huan jing ke xue= Huanjing kexue, January 2013, Vol.34(1), pp.108-15
  • Mô tả: The aim of this article is to explore the pollution level and potential ecological risk of heavy metals in soil of the relocation areas from the Danjiangkou Reservoir. The contents and spatial distribution of Cd, Pb, Cu, Zn, Cr and As in soil of the relocation areas from the Danjiangkou Reservoir were analyzed. The integrated pollution index and potential ecological risk index were used to evaluate the contamination degree and potential ecological risk of these elements. The results indicated that the average contents of Cd, Pb, Cu, Zn, Cr and As in the samples were 0.61, 23.11, 58.25, 22.65, 58.99 and 16.95 mg x kg(-1), respectively. Compared with the background value of soils from Henan province, all these 6 elements except Zn were enriched to some extent, especially Cd. Similar patterns were observed for the spatial distribution of Cu, Zn, and Pb. Compared with the contents of heavy metals in surface sediments of the typical domestic reservoirs, Cd and As in soil of the relocation areas from the Danjiangkou Reservoir were heavily accumulated. The correlation analysis showed that there were significant positive correlations among Pb, Cu, and Zn. And there was also significant positive correlation between Cr and Pb. In contrast, negative correlation was found between Cr and As. To sum up, the comprehensive assessment results showed that Cd was the primary element with high ecological risk.
  • Ngôn ngữ: Chinese
  • Số nhận dạng: ISSN: 0250-3301 ; PMID: 23487925 Version:1

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