聊城市城区土壤重金属汞的污染研究

依据土壤环境质量标准(GB 15618-1995)二级标准和山东省土壤背景值,采用单因子评价法和潜在生态危害指数法,对聊城市城区范围内采集的40个土壤样品进行重金属汞污染进行评价。结果表明:Hg的超标率达到30%,Hg含量远超过山东省土壤背景值,其最大值超过背景值的68倍;综合指数达到49.88,远远超出重度污染的限值,潜在生态危害较高。并对城区汞污染治理提出相关建议。

According to the soil environmental quality standard(GB 15618-1995) two standard and the soil background value of Shandong province, single factor evaluation and potential ecological risk index are used to assess heavy metal mercury pollution in 40 soil samples collected in Liaocheng City.The results show that the exceeding standard rate of Hg reached 30%, and the content of Hg was much higher than that of Shandong province. The maximum value was more than the background value of 68%, and the comprehensive index was up to 49.88, far beyond the limits of heavy pollution, high potential ecological risk,Some suggestions are put forward to control mercury pollution in urban areas.