8-ヒドロキシキナルジンによるインジウムの重量ならびに容量分析法
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概要
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8-Hydroxyquinaldine, a derivative of oxine, forms a yellow crystalline precipitate by reaction with indium. Its constitution is considered to be In(C<SUB>10</SUB>H<SUB>8</SUB>NO)<SUB>3</SUB>. It begins to form a precipitate at about pH 4 and the precipitation is quantitative above pH 6. It gives a constant weight by heating for 1 hour at 110°C, and there is practically no decrease in weight by heating for 1 hour at 150°C.<BR>Indium is calculated by multiplying the factor 0.1948 by the weight of precipitate. Several mg of indium can be determined accurately, as the factor is small. Since indium 8-hydroxyquinaldate can easily be brominated quantitatively as in the case of oxinate, a volumetric method applying of this procedure has also been investigated.
- 社団法人 日本分析化学会の論文
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