Pollution and Potential Ecological Risk of Heavy Metals in Bottom Sediments from Aha Lake
Potential ecological risk of Pb, Cd, Hg, As, Cu and Zn in sediments from Aha Lake ,one of the five drinking water sources for Guiyang City, were assessed based on the method presented by H?kanson. For comparison, both the pre-industrial reference values and the environmental background values of heavy metals for Guiyang area were employed to study the potential ecological risk for each selected heavy metal. When the highest background values of heavy metals in normal particulate of sediments of pre-industrialization were taken as references, the accumulating order was: Zn > Cd > Cu >As > Hg > Pb, and the order of potential ecological risk was: Cd > Hg > As > Cu > Zn > Pb. When the background values for Guiyang area worked as references, the accumulating order was: Cd > Zn > Hg > Cu >As > Pb, and the order of potential ecological risk was: Cd > Hg > As > Cu > Zn > Pb. It was thus evident that Cd and Hg produced a higher ecological risk than the other metals, and are the main contributors at each sampling location to the potential ecological risk index, therefore they are the critical elements in terms of ecological hazard in Aha Lake.
Aha Lake sediment heavy metals pollution potential ecological risk
Xian-fei HUANG Ji-wei HU Jia-jun DENG Cun-xiong LI Fan-xin QIN Cui-hong JIANG
Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecol Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecol
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）