›› 2012, Vol. 39 ›› Issue (3): 224-227.

• 经验交流 • 上一篇    下一篇

液相色谱-串联质谱法测定猪肉中3种β-受体激动剂类药物残留

郑百芹, 李爱军, 张建民, 董李学, 蒙君丽, 肖琎   

  1. 唐山市畜牧水产品质量监测中心,河北唐山 063000
  • 收稿日期:1900-01-01 修回日期:2011-02-22 出版日期:2012-03-20 发布日期:2012-03-20
  • 通讯作者: 李爱军

Determination of 3 β-agonists in Pork by Liquid Chromatography-tandem Mass Spectrometriy

ZHENG Bai-qin, LI Ai-jun, ZHANG Jian-min, DONG Li-xue, MENG Jun-li, XIAO Jin    

  1. The Livestock and Aquatic Products Quality Inspection and Test Center(Tangshan),Tangshan 063000,China
  • Received:1900-01-01 Revised:2011-02-22 Online:2012-03-20 Published:2012-03-20

摘要: 试验建立了液相色谱-串联质谱(LC-MS/MS)检测猪肉中的克仑特罗、沙丁胺醇、莱克多巴胺残留的方法,并对方法进行了优化。样品经0.2 mol/L的乙酸铵缓冲液提取,加入β-葡萄糖醛苷酶进行酶解,提取液经PCX柱进行净化,液相色谱-串联质谱进行测定,内标法定量。结果显示,猪肉中3种β-受体激动剂残留浓度在0.2~10 μg/kg范围线性关系良好,线性相关系数分别为0.9997、0.9999和0.9993,定量检出限均为0.5 μg/kg,回收率分别为93.57%~96.63%、92.35%~96.01%和91.66%~96.54%,该方法灵敏度高、重现性强,适用于猪肉组织样品中克仑特罗、沙丁胺醇及莱克多巴胺的确证检测。

关键词: 液相色谱-串联质谱; 猪肉; 克仑特罗; 沙丁胺醇; 莱克多巴胺

Abstract: To established a method to detect the residues of clenbuterol,salbutamol and ractopamine in pork by liquid chromatography-tandem mass spectrometry (LC-MS/MS) and optimized it. The samples was treated by 0.2 mol/L ammonium acetate buffer and added the beta-glucuronidase to it,purified the extracting solution with PCX column,determined by LC-MS/MS and quantitated with internal standard method. The results showed that the residual concentration of the three kinds of β-agonists in pork was 0.2 to 10.0 μg/kg and the linear correlation was well. The linear correlation coefficient were 0.9997,0.9999 and 0.9993,respectively. We detected the limitative concentration was 0. 5 μg/kg and the coefficient of recovery were 93.57% to 96.63%,92.35% to 96.01% and 91.66% to 96.54%,respectively. This method has the advantages of good sensitive,accuracy and easy repetition and it is suitable for the detection of clenbuterol,salbutamol and ractopamine in pork.

Key words: LC/MS/MS; pork; clenbuterol; sabutamol; ractopamine

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