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提出了在 p H 8.8的 H3BO3- Na2 B4 O7介质中 ,用还原溶出计时电位法测定水中痕量锰的方法。锰的检出限为 0 .5ng· ml-1,相对标准偏差为 4.5% ,线性范围为 0 .5～ 2 5ng· ml-1。采用标准曲线法对五份不同浓度的水样进行了测定 ,结果与原子吸收法相符
A method was proposed for the determination of trace manganese in water using H3BO3-Na2 B4 O7 medium of p H 8.8 by reduction stripping potentiometry. The detection limit of manganese was 0.5ng · ml-1, with a relative standard deviation of 4.5% and a linear range of 0.5-2.5ng · ml-1. Five standard curves were used to determine the water samples with different concentrations and the results were in agreement with the atomic absorption spectrometry