Affiliation:
1. Agence Française de Sécurité Sanitaire des Aliments, Laboratoire des Medicaments Vétérinaires, Laboratoire Communautaire de Reference pour les Résidus d’Antimicrobiens dans les Denrées Alimentaires d’Origine Animale, Unité d’Innovation Technique en Contaminants Médicamenteux et Désinfectants, BP 90203, 35302 Fougères, France
Abstract
Abstract
A high-performance liquid chromatographic multiresidue method was developed for the determination of 8 penicillin compounds (benzylpenicillin, phenoxymethylpenicillin, ampicillin, amoxicillin, nafcillin, oxacillin, cloxacillin, and dicloxacillin) at trace levels in muscle tissue. This method involves extraction of the penicillins with phosphate buffer pH 9 followed by cleanup and concentration on a C18 solid¯phase extraction column and reaction with benzoic anhydride at 50°C for 5 min and with 1,2,4-triazole and mercury(II) chloride solution pH 9 at 65°C for 10 min. The derivatized compounds are eluted on a C18 column with a mobile phase containing acetonitrile and phosphate buffer (pH 6; 0.1 mol/L) loaded with sodium thiosulfate and ion-pairing tetrabutylammonium hydrogenosulphate. The method detection limit is approximately 3-11 μg/kg and the limit of determination was evaluated down to 25 μg/kg in line with the criteria of the EU decision No. 93/256/EEC.
Publisher
Oxford University Press (OUP)
Subject
Pharmacology,Agronomy and Crop Science,Environmental Chemistry,Food Science,Analytical Chemistry
Cited by
16 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献