單項選擇題硼氫化鉀-硝酸銀分光光度法測定水中痕量砷,當取水樣體積為250ml,用10mm比色皿時,該方法的最低檢出濃度為()mg/L,測定上限為()mg/L.

A.0.0001,0.004
B.0.0002,0.008
C.0.0003,0.0016
D.0.0004,0.012


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