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| THE ANALYSIS OF SOIL HEAVY METAL SOURCES AND ASSESSMENT OF RELATED RISK IN A CERTAIN AREA OF CENTRAL ZHEJIANG PROVINCE |
| YIN Han-qin, JIAN Zhong-hua, WEI Ying-chun |
| Zhejiang Institute of Geological Survey, Hangzhou 311203, China |
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Abstract Based on data of heavy metals concentrations of 2 300 topsoil samples collected in central Zhejiang Province and regional geochemical exploration conducted in 1987, the authors analyzed the characteristics of Cd, Hg, Pb, Cr, Ni, Cu and Zn concentrations. The concentrations of these 8 heavy metals increase significantly in the industrial districts. Approximately 6.09% and 40.26% of the soil is respectively subjected to moderate to heavy and slight pollution of heavy metals. The distribution of contaminated districts is consistent with the traffic trunk and hardware enterprise areas, and has nothing to do with the geological background, which indicates that the heavy metals are derived from local hardware enterprises.
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Received: 22 February 2013
Published: 10 February 2014
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