Chromatographic determination of flumequine in food samples by post-column derivatisation with terbium(III).
作者： R.C. Rodríguez-Díaz , J.M. Fernández-Romero , M.P. Aguilar-Caballos , A. Gómez-Hens
DOI: 10.1016/J.ACA.2006.06.068
关键词:
摘要: The potential usefulness of terbium(III) as reagent for the luminescent determination flumequine residues in food samples has been studied using both fluorescence (FL) and time-resolved (TR) modes batch (B) integrated liquid chromatography (LC)/derivatisation approaches. system was optimised each instance to establish analytical features four methods. dynamic ranges calibration graphs, obtained with standard solutions flumequine, were (ng mL(-1)): B-FL 0.18-600; B-TR 2.4-150; LC-FL 3.7-1000 LC-TR 52-3000. detection limits also giving following values 0.055; 0.7; 1.1 15. precision, expressed percentage relative deviation, equal or lower than 5.1% all instances. LC methods, which avoid interference other quinolone antibiotics, applied analysis chicken muscle liver, whole milk samples. sample pre-treatment only consisted a deproteinisation step. validation procedure carried out EC recommendations, decision limit capability calculated. recoveries ranged from 95.0% 103.8%.
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