安徽东至香隅化工园区域土壤重金属含量水平及污染评价

为研究安徽东至香隅化工园区域土壤重金属累积程度及其环境影响，在此区域采集5个表层土壤样本，分析测定了重金属Cd、Pb、Cr的含量，并用单因子指数法和潜在生态危害指数法进行了环境质量评价。结果表明：Cr含量超出背景值达10倍，富集程度高，但潜在生态危害指数较小；Cd的含量高出背景值2-3倍，富集程度低，但潜在生态危害指数最高；Pb也存在不同程度的污染。因此应合理引导区域开发活动，避免区域土壤环境污染加剧。

Determination of heavy metals contents and evaluation of contamination in soil of Anhui Dongzhi Xiangyu Chemistry Industrial Zone

Five soil samples were collected in the Chemistry Industrial Zone of Anhui Dongzhi Xiangyu. Cd.Pb and Cr concentrations were analyzied in order to understand their accumulation extents. Environment quality evaluation was conducted adopting the single factor index and the potential ecology risk index （RI）. Results showed that although Cr has the highest concentration, which is above 10 times of the background value, but with a small RI. On the contrary, Cd accumulated only 2 - 3 times of the background value but has the highest RI. Furthermore , Pb has showed pollution to some extent. Therefore, reasonable guidance of the regional development action can avoid the soil environment to get worse.