徐州市涉重企业地下水重金属污染调查

Study on the Effect of Enterprises Involving Heavy Metals on the Groundwater Environment in Xuzhou City

为了调研徐州市涉重企业地下水质量与污染状况,在徐州市19家涉重企业厂区采集地下水样品19组,分别对特征污染物铅、镉、砷和六价铬进行监测分析,依据地下水环境质量评价和污染等级评价方法,分析徐州市地下水重金属含量、污染程度及分布。结果表明19家涉重企业地下水中4种金属元素检出率由高到低依次为砷>铅>镉>六价铬,质量浓度均达到Ⅲ类地下水质量标准,但新沂市有1组水样出现镉轻污染现象,地下水存在潜在的镉污染风险隐患。

In order to investigate the quality and pollution status of groundwater from enterprises which involved heavy metals in Xuzhou City, 19 samples were collected from 19 enterprises. These samples were monitored and analyzed to characterize the Heavy Metals Pollutants including Pb, Cd, As and Cr6＋. The research and analysis of the enterprise groundwater concentrations of heavy metals, pollution level and distribution were investigated according to the groundwater environmental quality assessment and pollution degree evaluation method. Results showed that the concentration order of four kinds of heavy metals detection rate is As＆gt;Pb＆gt;Cd＆gt;Cr6＋, mass concentration was not excessive, but Cd pollution phenomena was appeared in one groups of water samples. It indicates that Cd pollution of groundwater has potential risks.