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单项选择题硼氢化钾-硝酸银分光光度法测定水中痕量砷,当取水样体积为250ml,用10mm比色皿时,该方法的最低检出浓度为()mg/L,测定上限为()mg/L.

A、0.0001,0.004

B、0.0002,0.008

C、0.0003,0.0016

D、0.0004,0.012

  • D
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