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《Resources and Environment in the Yangtze Basin》 2008-05
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HEAVY METAL CONTAMINATION IN SEDIMENTS OF DEXING MINES,JIANGXI,CHINA

CHEN Cui-hua1,NI Shi-jun2,HE Bin-bin3,ZHANG Cheng-jiang1(1.College of Earth Sciences,Chengdu University of Technology,Chengdu 610059,China;2.College of Applied Nuclear Techniques & Automatic Engineering,Chengdu University of Technology,Chengdu 610059,China;3.Institue of Geo-Spatial Information Science and Technology,University of Electronic Science and Technology of China,Chengdu 610054,China)  
It is very important to investigate and assess ecological environment quality of mines and neighborhood areas for ecological environment monitoring and protection.In order to assess the extent of heavy metal contamination resulting from past mining activity in Dexing region,330 sediment samples within scope of 4 800 km2 were collected and analyzed for As,Hg,Cd,Cr,Zn,Cu and Pb in 2004.Heavy metal levels were determined using inductively couple plasma-atomic emission spectrometry and X-ray fluorenscence spectrometry procedures.The contents of sediments samples concentrated between 3.070~1 109 mg/kg for As,0.015~5.430 mg/kg for Hg,0.035~13.5 mg/kg for Cd,7~236 mg/kg for Cr,22~1 770 mg/kg for Zn,5~4 390 mg/kg for Cu,and 15~1 685 mg/kg for Pb,respectively.Based on the statistics analysis and contour mapping of heavy metal contents,the results of assessment indicated consistently that the extents of contamination and potential ecological risk were different for As,Hg,Cd,Cu and Pb,especially in the areas of Dexing River and Dawu River around Dexing mines,along the lower courses of Le′an River,and some coal mines in the northwest.
【Fund】: 国土资源部公益类专项资助项目(30302408-01)
【CateGory Index】: X52
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