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P.G Gigosos
Xunta de Galicia
Publications 3
Published on Feb 1, 2000in Journal of Chromatography A 3.72
P.G Gigosos3
Estimated H-index: 3
P.R Revesado1
Estimated H-index: 1
+ 4 AuthorsA. Cepeda32
Estimated H-index: 32
(University of Santiago de Compostela)
A rapid, specific reversed-phase HPLC method is described, with solid-phase extraction, for assaying five quinolones (ciprofloxacin, difloxacin, enrofloxacin, norfloxacin and marbofloxacin) with confirmative diode-array detection in samples of bovine kidney, muscle and eggs. The least efficient extraction was marbofloxacin from kidney tissue (64%). The lower detection limit for each quinolone was: enrofloxacin and ciprofloxacin, 1 ng; norfloxacin and difloxacin, 2 ng; marbofloxacin, 4 ng injecte...
92 Citations Source Cite
Published on Oct 1, 1999in Journal of Agricultural and Food Chemistry 3.41
Y. Iglesias3
Estimated H-index: 3
C. Fente26
Estimated H-index: 26
+ 4 AuthorsP.G Gigosos3
Estimated H-index: 3
A new method for the determination of dexamethasone (9α-fluoro-11β,17α,21-trihydroxy-16α-methylpregna-1,4-diene-3,20-dione) in bovine liver was developed. This new liquid−liquid extraction method comprises the addition of sodium hydroxide to the tissue sample followed by extraction with ethyl acetate. After centrifugation, the extract is evaporated to dryness and the residue dissolved in acetonitrile. The cleaning of the fat is performed with n-hexane, and the acetonitrile layer is evaporated. A...
15 Citations Source Cite
C. Fente26
Estimated H-index: 26
(University of Santiago de Compostela),
Beatriz I. Vázquez25
Estimated H-index: 25
(University of Santiago de Compostela)
+ 2 AuthorsP.G Gigosos3
Estimated H-index: 3
(Xunta de Galicia)
Abstract A method for the determination of clenbuterol (4-amino-3,5-dichloro-α[( tert. -butylamino)methyl]-benzyl alcohol hydrochloride) in hair of living cows has been developed. Hair samples were digested in an alkaline medium. The diphasic dialysis technique is a semi-permeable membrane technology developed for the direct extraction of relatively low-molecular-mass analytes such as clenbuterol. In this case, we used sodium citrate buffer to homogenize the digested hair, dichloromethane was us...
33 Citations Source Cite