EN
A liquid chromatographic method coupled with tandem mass spectrometry for the determination of residues of β-lactams, macrolides, tetracyclines, quinolones, sulfonamides, aminoglycosides, and lincosamides in animal tissues was described. Analytes were isolated from biological material with acetonitrile or with trichloroacetic acid. The procedure was validated according to European Decision 2002/657/EC.