Determination of vitamin E in multivitamin products by gas-liquid chromatography
β Scribed by F. P. Mahn; V. Viswanathan; C. Plinton; A. Menyharth; B. Z. Senkowski
- Publisher
- John Wiley and Sons
- Year
- 1968
- Tongue
- English
- Weight
- 454 KB
- Volume
- 57
- Category
- Article
- ISSN
- 0022-3549
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A high-pressure liquid chromatographic assay was developed for the determination of four water-soluble vitamins: niacinamide, pyridoxine, thiamine, and riboflavin. The four vitamins are assayed simultaneously in multivitamin products not containing minerals. Thiamine currently is not quantitated in
Although morphine may be gas chromatographed as such, its phenolic properties cause adsorption which produces tailing and makes quantitative work impossible. This difficulty was overcome by converting morphine to its trimethylsilyl ether which gave a symmetrical elution The alkaloids of opium were e