簡易算出法を用いるマンガンの過硫酸アンモニウム酸化容量法
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概要
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In the determination of manganese by the persulfate oxidation-volumetry without an addition of sodium chloride, it is a merit to be titrated with arsenite solution to a clear end point. But it has been reported that manganese (VII) is not completely reduced to manganese (II) by sodium arsenite, and it is necessary to standardize the sodium arsenite solution against the standard steels that have approximately the same manganese contents as samples to be analyzed. <BR>This treatment is inconvenient for analysis of lots of samples that have different amounts of manganese. By the investigation with an attempt to avoide the above cumbersome treatment, a linear correlation was found between the amounts of manganese and the titration volumes of sodium arsenite solution. <BR>Manganese contents were thus calculated from either regression equation or a linear regression line with consistently good results agreeing with those by JIS absorptiometry.
- 社団法人 日本分析化学会の論文