Multiresidue Determination of Antibiotics in Preserved Eggs Using a QuEChERS-Based Procedure by Ultrahigh-Performance Liquid Chromatography Tandem Mass Spectrometry

作者：Li, Yonggang; Chen, Ziliang; Wen, Sheng^*; Hou, Xiaolin; Zhang, Rui; Ma, Meihu^*

来源：Acta Chromatographica, 2018, 30(1): 9-16.

DOI：10.1556/1326.2017.29211

• QuEChERS
• UHPLC-MS/MS
• antibiotics
• macrolides
• quinolones
• sulfonamides
• preserved eggs

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.

• 出版日期2018-3
• 单位北京师范大学; 湖北省疾病预防控制中心