RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2008, Vol. 17 >> Issue (5): 766-766.

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HEAVY METAL CONTAMINATION IN SEDIMENTS OF DEXING MINES|JIANGXI|CHINA

CHEN Cuihua1| NI Shijun2| HE Binbin3| ZHANG Chengjiang1   

  • Received:1900-01-01 Revised:1900-01-01 Online:2008-09-20

Abstract:

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 km2 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.

Key words: sediments, heavy metals, GIS, Dexing Mining Area of Jiangxi Province

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