有機物の標準添加法吸光光度定量に関する研究 : (第1報)第二銅を用いる吸光光度法による有機ヨウ素の定量

概要

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Iodine in an organic compound was transformed to iodate by decomposing the sample in an oxygen flask, and cuprous iodide was precipitated by the addition of cupric salt and a reducing agent to the solution. The precipitate was collected and dissolved again in nitric acid, and the cupric ion in the solution was colored by the addition of ethylene diamine. For the purpose of spectrophotometric determination, the concentration of the cupric ion itself produced was not high enough to measure absorbance directly, so that the authors employed precision colorimetry involving the standerd addition method. By this method, iodine in 30〜40 miligrams of samples was determined considerably rapidly and the results were found to be as accurate as those of the volumetric method. The determination was also available to the determination of iodine in compounds containing chlorine.
公益社団法人日本薬学会の論文
1967-09-25