Confirmation of malachite green, gentian violet and their leuco analogs in catfish and trout tissue by high-performance liquid chromatography utilizing electrochemistry with ultraviolet-visible diode array detection and fluorescence detection.
J Chromatogr B Biomed Sci Appl
; 700(1-2): 223-31, 1997 Oct 24.
Article
en En
| MEDLINE
| ID: mdl-9390733
ABSTRACT
A sensitive analytical procedure for the confirmation of residues of malachite green (MG), gentian violet (GV) and their leuco analogs (LMG and LGV) in catfish and trout tissue at 10 ng/g is described. Frozen (-20 degrees C) fish fillets were cut into small pieces and homogenized in Waring blendors. The compounds of interest were extracted from 20-g amounts of homogenized fish tissue with acetonitrile-buffer, partitioned against methylene chloride, and isolated with tandem neutral alumina and propylsulfonic acid cation-exchange solid-phase extraction cartridges. Samples of 100 microl (0.8 g equiv.) were chromatographed isocratically in 10 min using an acetonitrile-buffer mobile phase on a short-chain deactivated (SCD) reversed-phase column (150x4.6 mm I.D.) in-line with a post-column oxidation coulometric electrochemical cell (EC), a UV-Vis diode array detector and a fluorescence detector.
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Bases de datos:
MEDLINE
Asunto principal:
Colorantes de Rosanilina
/
Trucha
/
Bagres
/
Residuos de Medicamentos
/
Violeta de Genciana
/
Antifúngicos
Tipo de estudio:
Diagnostic_studies
Límite:
Animals
Idioma:
En
Revista:
J Chromatogr B Biomed Sci Appl
Asunto de la revista:
QUIMICA CLINICA
Año:
1997
Tipo del documento:
Article
País de afiliación:
Estados Unidos