Gas-Liquid Chromatographic Determination of Choline in Low and High Potency Multiple Vitamin Tablets and Liver Preparations
Keyword(s):
Abstract A procedure is described for the quantitative determination of 0.020—6.0 mg choline in low and high potency reference multiple vitamin tablets and standard liver preparations. The trimethylamine quantitatively produced in a sealed tube by treatment with aqueous 5 0% alkali is simultaneously extracted with 0.200—0.500 ml of an isobutanol-ethanol (1+1) mixture and determined by gas-liquid chromatography. An average recovery of 100 ± 3 % was obtained.
1977 ◽
Vol 60
(4)
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pp. 935-939
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1979 ◽
Vol 62
(1)
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pp. 171-175
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1977 ◽
Vol 60
(6)
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pp. 1307-1309
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1978 ◽
Vol 61
(3)
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pp. 636-639
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