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Título

Determination of quinolone residues in infant and young children powdered milk combining solid-phase extraction and ultra-performance liquid chromatography–tandem mass spectrometry

AutorHerrera-Herrera, Antonio V.; Hernández-Borges, Javier; Rodríguez-Delgado, Miguel A.; Herrero, Miguel ; Cifuentes, Alejandro
Palabras claveQuinolones
Antibiotics
UPLC–MS/MS
SPE
Powdered milk
Infants
Fecha de publicaciónoct-2011
EditorElsevier
CitaciónJournal of Chromatography A 1218(42): 7608–7614 (2011)
ResumenThe present work describes a method based on solid-phase extraction (SPE) and ultra-performance liquid chromatography tandem mass spectrometry (UPLC–MS/MS) for the simultaneous determination of three quinolones (pipemidic acid, oxolinic acid and flumequine) and twelve fluoroquinolones (marbofloxacin, fleroxacin, pefloxacin, levofloxacin, norfloxacin, ciprofloxacin, enrofloxacin, danofloxacin, lomefloxacin, difloxacin, sarafloxacin, and moxifloxacin) in different infant and young children powdered milks. After suitable deproteination of the reconstituted powdered samples, a SPE procedure was developed providing recovery values higher than 84% (RSDs lower than 13%) for all the analytes, with limits of detection between 0.04 and 0.52 μg/kg. UPLC–MS/MS analyses were carried out in less than 10 min. Sixteen infant and young children powdered milk samples of different origin, type and composition bought at Spanish markets were analyzed. Residues of the selected antibiotics were not detected in any of the analyzed samples.
Descripción7 páginas, 3 figuras, 3 tablas.-- El pdf del artículo es la versión pre-print.
Versión del editorhttp://dx.doi.org/10.1016/j.chroma.2011.05.066
URIhttp://hdl.handle.net/10261/47388
DOI10.1016/j.chroma.2011.05.066
ISSN0021-9673
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