【摘要】 调查了上坝村重污染区的上樟组、群樟组和群联组共29个井水中的pH、Eh和重金属.结果表明,上坝村井水的Cu、Pb含量不超标,但Zn、Cd和Mn浓度均值分别是国家生活饮用水卫生标准的1.24倍、1.96倍和10.8倍;Zn、Cd、Mn的浓度和Eh值随着水井离横石河越远而越低,即呈现上樟组>群樟组>群联组的关系;当Eh小于300mV或上樟组pH值大于5.5、群樟组pH值大于4、群联组pH值介于5.1—5.4时,随着Eh的降低或pH值升高,井水中Zn、Cd、Mn的浓度急剧下降且趋向零.更多还原

【Abstract】 Values of pH,Eh and concentration of heavy metals as well as their relationship in 29 drinking well water samples in Shangba village were investigated.The results showed that although concentration of Cu,Pb in the water was below the national quality standard of drinking water,the mean concentration of Zn,Cd and Mn was 1.24,1.96 and 10.8 times as high as the standard,respectively.The mean concentration of Zn,Cd,Mn and Eh value in different villages groups displayed the following order: Shangzhang>Qunzhang>Qunlian.When Eh<300mV or pH>5.5,4 and between 5.1 and 5.4 for Shangzhang,Qunzhang and Qunlian,respectively,the concentrations of Zn,Cd and Mn declined sharply to zero with pH increase or Eh decrease.更多还原