当前学科:环境监测上岗考试
  • 题目: 单选
    二乙基二硫代氨基甲酸银分光光度法测定水中砷,当试样取最大体积50ml、用10mm比色皿时,可检测水中砷的上限浓度为()mg/L,最低检出浓度为()mg/L。

      A . A.0.10,0.001
      B . B.0.30,0.003
      C . C.0.50,0.007
      D . D.0.70,0.005

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