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Spectrophotometric determination of alpha tocopherol acetate in soft capsules

, : Spectrophotometric determination of alpha tocopherol acetate in soft capsules. Analytical Letters 18(15): 1835-1846

Two spectrophotometric methods have been described for the determination of .alpha.-tocopherol acetate (vitamin E) in soft capsules. The first method applies the orthogonal function method under least squares. The quadratic coefficients calculated over the wavelength range 277-304 nm at 4-nm intervals in chloroform were reproducible and independent of ethyl oleate concentration. The second method applies the second derivative (D2) to correct for irrelevant absorbance due to ethyl oleate. The peak trough amplitude at 271-287 nm was in linear correlation to the concentration of vitamin E. The recoveries obtained using the proposed methods agreed with those obtained using the official procedure.

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Pumpen P.P.; Gren E.Ya, 1974: Ribosomal rna synthesis in escherichia coli during rna phage replication. Latvijas Psr Zinatnu Akademijas Vestis (3): 132

Fiennes, R.N.T.W., 1961: Report of the pathologist for the year 1959. Proc Soc. Lond: 489-503

Bryan, J., 1963: Report of the Director of Forest Products Research for 1962. In the mycology sect. (pp. 18-21) experiments showed that decay resistance in larch may not be entirely dependent on dihydroquercetin present in the heartwood, extracts of which proved non-toxic to Lentinus lepideus at the conc, at which the compo...

Mohl-Hansen, U., 1949: The bird life in Pearyland, North Greenland. Observations on Dansk Pearyland Ekspedition in the summer 1947.. Dansk Ornithologisk Forenings Tidsskrift, 43: 109-129

Green, Robert C.; Benjamin, Sheldon; Cummings, Jeffrey L., 1995: Fellowship programs in behavioral neurology. We sent a behavioral neurology fellowship questionnaire to each of the training directors of 160 neurology residency programs throughout the world, seeking information about programs offering advanced training in behavioral neurology (or similar f...

Aartsen, B. Van; Goot, Vs-Van-Der, 1981: Hunting haunts of robber flies (Diptera, Asilidae) in the Netherlands. Entomologische berichten, 41(7): 97-101

Cui, H; Jacobsen, Ew, 2002: Optimal design of buffers in plants with recycling. Pulp and paper Canada 103(6): 25-29

Curtin, D.; Steppuhn, H.; Mermut, A. R.; Selles, F., 1995: Sodicity in irrigated soils in Saskatchewan: chemistry and structural stability. Two irrigated soils from Saskatchewan, Canada, damaged by sodicity were examined to determine the processes and the chemical conditions (exchangeable Na and electrolyte concn) that cause structural damage. Dispersion of clays in the upper 20 cm of...

Levin A.C.; Schauf V.; Wolter J.; Deinhardt F., 1974: Correlation of cellular immunity with clinical course in breast cancer. Proceedings of the American Association for Cancer Research 15: 55

Wang, Yanfeng; Sawchuk, Ronald J., 1993: Assessment of oral absorption of AZT and AZdU in the rabbit using deconvolution. Pharmaceutical Research (New York) 10(10 SUPPL ): S349