鐵鋼中窒素の簡易蒸溜法

概要

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In order to determine nitrogen in iron and steel by distillation method, the author used an apparatus that consisted of two parts, i.e., a dissolving part and a distilling part, both in exact and rapid determinations. The author designed a new simple apparatus for rapid determination of nitrogen by distillation method for iron and steel, and also for organic nitrogen. The dissolving part and the distillating part are combined to a block made of hard glass. Samples which were expected to have a large nitrogen content in acid-insoluble residue, were not suitable for analysis, because this was so designed as the sample held in the Kjeldabl flask was dissolved and distilled continuously without being taken out of the fiask in order to divide residue from solution, and therefore the nitrogen content in residue could not be read. The results obtained by tbis apparatus showed a good agreement as compared with those determined by the standard method, as shown in Table 1.
社団法人日本鉄鋼協会の論文
1954-04-25