title: Comparative study of the LC-MS/MS and UPLC-MS/MS for the multi-residue analysis of quinolones, penicillins and cephalosporins in cow milk, and validation according to the regulation 2002/657/EC.
abstract: The aim of this study was to develop and validate an analytical method to simultaneously determine European Union-regulated β-lactams (penicillins and cephalosporins) and quinolones in cow milk. The procedure involves a new solid phase extraction (SPE) to clean-up and pre-concentrate the three series of antibiotics before analysis by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). LC-MS/MS and UPLC-MS/MS techniques were also compared. The method was validated according to the Directive 2002/657/EC and subsequently applied to 56 samples of raw cow milk supplied by the Laboratori Interprofessional Lleter de Catalunya (ALLIC) (Laboratori Interprofessional Lleter de Catalunya, Control Laboratory Interprofessional of Milk of Catalunya).
authors.affiliation: Analytical Chemistry Department, University of Barcelona, Avda. Diagonal 647, E-08028 Barcelona, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Junza
authors.forename: R
authors.initials: R
authors.lastname: Amatya
authors.forename: D
authors.initials: D
authors.lastname: Barrón
authors.forename: J
authors.initials: J
authors.lastname: Barbosa
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004350:Drug Residues / Q000032:analysis* / Q000592:standards; D005062:European Union; D016014:Linear Models; D008892:Milk / Q000737:chemistry* / Q000592:standards; D015363:Quinolones / Q000032:analysis*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D052616:Solid Phase Extraction; D053719:Tandem Mass Spectrometry / Q000379:methods*; D047090:beta-Lactams / Q000032:analysis*
chemical_list: D015363:Quinolones; D047090:beta-Lactams