YAKUGAKU ZASSHI
Online ISSN : 1347-5231
Print ISSN : 0031-6903
ISSN-L : 0031-6903
分光反射率測定の分析的応用に関する研究 (第1報)
食用タール色素類の濾紙上分光反射率測定について その1
山口 一孝藤井 清次太幡 利一加藤 三郎
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1954 年 74 巻 12 号 p. 1322-1326

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Using spots developed on a filter paper from 24 kinds of tar dyes for foodstuff, reflect-ance spectra in the visible range were measured with Beckman Spectrophotometer Model B, with a diffuse reflectance attachment. The majority of the spectra thereby obtained were found to agree well with absorption spectra of these dye solutions. A mixture of several kinds was submitted to paper chromatography and separated into componental parts. In order to determine the composition of such dye mixtures the separated colored spots were submitted to reflectance measurement. By comparing these measured values with the reflectance of the authentic dyes, satisfactory agreement was obtained.

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© by the PHARMACEUTICAL SOCIETY OF JAPAN
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