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

The 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...

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Bibliographic Details
Published in:Journal of Chromatography A 2011-10, Vol.1218 (42), p.7608-7614
Main Authors: Herrera-Herrera, Antonio V., Hernández-Borges, Javier, Rodríguez-Delgado, Miguel A., Herrero, Miguel, Cifuentes, Alejandro
Format: Article
Language:English
Subjects:
Antibiotics
children
ciprofloxacin
danofloxacin
detection limit
difloxacin
dried milk
enrofloxacin
flumequine
Infants
marbofloxacin
markets
norfloxacin
oxolinic acid
Powdered milk
Quinolones
sarafloxacin
solid phase extraction
SPE
tandem mass spectrometry
ultra-performance liquid chromatography
UPLC–MS/MS
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Summary:The 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.
ISSN:0021-9673
DOI:10.1016/j.chroma.2011.05.066