✦ LIBER ✦

The use of combined high performance liquid chromatography negative ion chemical ionization mass spectrometry to confirm the administration of synthetic corticosteroids to horses

✍ Scribed by E. Houghton; M. C. Dumasia; J. K. Wellby

Publisher: John Wiley and Sons
Year: 1981
Tongue: English
Weight: 582 KB
Volume: 8
Category: Article
ISSN: 1076-5174
DOI: 10.1002/bms.1200081107

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✦ Synopsis

Negative ion chemical ionization mass spectra of some corticosteroids have been obtained by direct syringe introduction on to the Finnigan moving belt high-performance liquid chromatograph-mass spectrometer interface. Proprietary preparations based upon dexamethasone, betamethasone and prednisolone were administered to horses at therapeutic dose level. Urine samples were extracted, the extracts purified by Sephadex LH-20 chromatography and the presence of the parent steroids in the eluates was confirmed by combined high-performance liquid chromatography negative ion chemical ionization mass spectrometry using ammonia as reagent gas.

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