Quantitative Refractometric-Spectrophotometric Analysis of Oil Solutions of Vitamins A and E

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• 作者：I. G. Zenkevich ; V. M. Kosman ; V. G. Makarov and Yu. V. Dadali
• 刊名：Russian Journal of Applied Chemistry
• 出版时间：2001
• 出版年：2001
• 期刊代码：29_10704272
• 类别：ph
• 卷：74
• 期：6
• 页码：1034-1035
• 数据来源：sp

摘要

A refractometric-spectrophotometric method is proposed for routine analyses for vitamins A and E in oil solutions, which is 3-4 times less time-consuming than HPLC. The determination procedure includes measurements of the refractive index n_D20 of samples and optical density of their solutions in hexane at 325 nm.