Journal
ACTA CHROMATOGRAPHICA
Volume 30, Issue 1, Pages 9-16Publisher
AKADEMIAI KIADO RT
DOI: 10.1556/1326.2017.29211
Keywords
QuEChERS; UHPLC-MS/MS; antibiotics; macrolides; quinolones; sulfonamides; preserved eggs
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Funding
- Hubei Provincial Centre for Disease Control and Prevention [Y2013W01, Y2013W07]
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A modified QuEChERS (quick, easy, cheap, effective, rugged, and safe) method and ultrahigh-performance liquid chromatography coupled to tandem mass spectrometry (UHPLC-MS/MS) were optimized and validated for 16 anti-biotics belonging to three families (macrolides, quinolones, and sulfonamides) that were found in preserved eggs. Samples were extracted in 4 mL water and 10 mL acetonitrile with 1% acetic acid and subjected to a cleanup procedure using dispersive solid-phase extraction with C18 and primary secondary amine sorbents, prior to detection by UHPLC-MS/MS. Matrix-matched calibration was used for quantification to reduce the matrix effect with limits of quantification in the range of 0.3-3.0 mu g/kg. Validation of the method was conducted by recovery and precision experiments. Recoveries of the spiked samples ranged from 73.8% to 127.4%, and the intra-and inter-day relative standard deviations were lower than 21.2% and 22.3%, respectively. This method was successfully applied to the analysis of antibiotics in preserved egg samples.
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