アミンを用いる水溶性酸の赤外吸収スペクトル分析 : 赤外吸収スペクトルによる医薬品の分析研究(第18報)

概要

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An examination was made on the general problems in the solvent extraction-infrared analysis of water soluble acids with amines and the findings obtained are:<BR>(1) The amines used for the solvent extraction should not always be high molecular weight amine. It is extractable even with low molecular weight amine depending on the kinds of water soluble acids, and an excess of amines in organic layer is transfered to the water layer and therefore it will not interfere with the absorbance of the sample, accordingly it is considered to be convenient to the IR measurements.<BR>(2) To this method, the compensation method is applicable, and so it is found to be effectively applicable to the qualitative and quantitative analysis of small amount of impurities.<BR>(3) Without any influence on the ratio of water content in samples, it is found to be usuful for analysis in measuring their spectra.
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