北京市垃圾填埋场地下水中砷、汞含量分析

生活垃圾的处置一直以填埋为主,垃圾填埋承载着巨大的环境压力,尤其是垃圾填埋产生的渗滤液会对地下水造成砷、汞污染。为了解北京市生活垃圾填埋场地下水砷、汞污染水平,在北京市5座生活垃圾填埋场布设采样点,采集36个地下水样品,采用氢化物发生-原子荧光法,分析了地下水砷、汞含量特征。结果表明,36个地下水样品砷浓度范围0.41~4.82μg/L,汞浓度范围0.024~0.121μg/L,北京市典型垃圾填埋场地下水样品不存在砷、汞污染问题。

The disposal of municipal solid waste has always been based on landfill,which carries huge environmental pressure.Especially,landfill will cause serious arsenic and mercury pollution to groundwater.In order to understand the levels of arsenic and mercury pollution in groundwater of municipal solid waste landfill in Beijing,36 groundwater samples were collected at 5 municipal solid waste landfill sites in Beijing,and the characteristics of arsenic and mercury pollution in groundwater were analyzed by hydride generation atomic fluorescence method.The results of 36 samples showed that arsenic concentration ranged from 0.41 to 4.82μg/L;mercury concentration ranges from 0.024 to 0.121μg/L.The groundwater samples from typical landfill sites in Beijing are free of arsenic and mercury contamination.