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Spectrophotometric determination of microamounts of tocopheryl acetate (vitamin E) in multi-vitamin capsules

โœ Scribed by William Adeniyi; Bruno Jaselskis


Book ID
118993221
Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
348 KB
Volume
27
Category
Article
ISSN
0039-9140

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Spectrophotometric determination of vita
โœ Abdel-Aziz M. Wahbi; Mohammad A. Abounassif; Hussein M.G. Alkahtani ๐Ÿ“‚ Article ๐Ÿ“… 1989 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 343 KB

The first derivative curve (D1) of the absorption spectrum of vitamin A acetate in cyclohexane possesses a trough (D11) at 348 nm and a maximum (D12) at 306 nm. D11, D12, and delta D1 (= D11 - D12) are linearly related to concentration over a range of 5-25 i.u. ml-1. When a tangent is drawn between