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Identification of medicinal additives in animal feedingstuffs by high-performance liquid chromatography
M K Cody1, G B Clark, B O Conway
1Department of Trade and Industry, Laboratory of the Government Chemist Middlesex, UK.
The Analyst
|January 1, 1990
Abstract:
A method is described for the detection of 25 drugs used as prophylactics or as growth promoters in commercial animal feedingstuffs. The sample was extracted with aqueous acetonitrile, the co-extractives were removed with a silica cartridge and the eluate was examined by high-performance liquid chromatography, using two columns and five mobile phases. Thirteen animal ++feedingstuffs containing different combinations of drugs were prepared and used to test the method.