Determination off Sodium Phenobarbital in Animal Chow by High-Pressure Liquid Chromatography
- 1 January 1978
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Chromatographic Science
- Vol. 16 (1) , 23-27
- https://doi.org/10.1093/chromsci/16.1.23
Abstract
An analytical procedure is described for determining residues of sodium phenobarbital in animal chow at levels as low as 0.14 ppm. The methanol extract is subjected to a liquid-liquid cleanup at pH 13 and 1, further cleaned up on a silica gel column and assayed by high-pressure liquid chromatography by using an ultraviolet absorption detector at 210 nm. Data concerning extraction efficiency, partition values and stability of the chemical in animal chow are also presented.Keywords
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