QuEChERS-超高效液相色谱-串联质谱法同时快速测定肉类食品中多种抗生素残留
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(广州市疾病预防控制中心,广东 广州 510440)

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李晓晶 女 副主任技师 研究方向为食品安全检测技术E-mail:saiint@163.com

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广东省医学科研基金项目(B2015095);广州市医药卫生科技项目(20151A011052)


Rapid determination of 28 antibiotic residues in meat by QuEChERS ultra performance liquid chromatography-tandem mass spectrometry
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(Guangzhou Center for Disease Control and Prevention,Guangdong Guangzhou 510440,China)

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    摘要:

    建立能同时检测肉类食品中20种磺胺和8种喹诺酮类抗生素残留的QuEChERS-超高效液相色谱-串联质谱法(UPLC-MS/MS)。方法 样品加1%甲酸乙腈提取,经分散固相萃取净化后,采用Waters C18(2.1 mm×100 mm,1.7 μm)色谱柱分离,梯度洗脱,采用电喷雾-正离子多反应监测模式,外标法定量。结果 28种抗生素在各自浓度范围内线性关系良好,相关系数(r)为0.997 5~0.999 6,检出限(LOD)为0.17~0.91 μg/kg(S/N=3),磺胺类抗生素回收率在70.9%~115.2%之间,RSD在2.8%~15.9%(n=6)之间;喹诺酮类抗生素回收率在71.3%~112.3%之间,RSD在2.5%~14.6%(n=6)之间。结论 建立的方法准确、快速、灵敏度高,可对动物源性食品中多种抗生素残留进行快速分析。

    Abstract:

    A method was developed for the simultaneous determination of 20 sulfonamides and 8 quinolones antibiotic residues in meat by QuEChERS and ultra performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).Methods The analytes were extracted with 1% formic acid acetonitrile and cleaned up with dispersive-solid phase extraction. The target analytes were separated by Waters C18 column with gradient elution. The analytes were detected by tandem quadrupole mass spectrometry after positive electrospray ionization by multiple reaction monitoring (MRM). External standard method was used to determine the results. Results The correlation coefficients of 28 antibiotics ranged from 0.997 5 to 0.999 6 in the linear range. The limits of detection were 0.17-0.91 μg/kg (S/N=3). The recoveries of sulfonamides and quinolones were 70.9% to 115.2% and 71.3%-112.3% respectively. The RSDs of sulfonamides and quinolones were 2.8%-15.9% and 2.5%-14.6%(n=6) .Conclusion The method was effective, rapid, sensitive, and suitable for the monitoring of multi-antibiotic residues in animal derived foods.

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李晓晶,于鸿,彭荣飞,甘平胜,黎志峰. QuEChERS-超高效液相色谱-串联质谱法同时快速测定肉类食品中多种抗生素残留[J].中国食品卫生杂志,2016,28(6):747-752.

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  • 收稿日期:2016-08-11
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  • 在线发布日期: 2017-01-06
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