過硫酸アンモンー亞砒酸ソーダ法による鐵鋼中の Mn 迅速定量法に就て (II)

概要

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Experiments performed after the publication of the 1st report reveal the fact that the Mn titer of one and the same As_2O_3 solution varies according to Mn content in the standard steels used for standardization. It signifies that standard steels containing approximately the same amount of Mn as actual samples must be chosen-as accurately as possible on principle-in order to prevent errors. The above-mentioned method, however, is too inconvenient to be adopted as routine analysis in plants where many sample pieces are dealt with. The experiments, carried out with a view to eliminating such a defect, point to the conclusion that satisfactory and concordant results are always obtainable by adding a chloride such as KCl or NaCl before the titration.
社団法人日本鉄鋼協会の論文
1951-01-25