食品科学 ›› 2006, Vol. 27 ›› Issue (8): 231-234.

• 分析检测 • 上一篇    下一篇

固相萃取气相色谱-质谱联用法测定动物组织中的莱克多巴胺

 刘勇军, 吴银良, 刘素英, 单吉浩, 尤华   

  1. 农业部畜禽产品质量监督检验测试中心
  • 出版日期:2006-08-15 发布日期:2011-10-14

Determination of Ractopamine in Animal Tissues by Solid Phase Extraction with Gas Chromatography-mass Spectrometry

 LIU  Yong-Jun, WU  Yin-Liang, LIU  Su-Ying, DAN  Ji-Hao, YOU  Hua   

  1. Quality Control and Inspection Center for Domestic Animal Product,Ministry of Agriculture,Beijing 100026,China
  • Online:2006-08-15 Published:2011-10-14

摘要:  通过液液分配和固相萃取提取、净化动物组织中添加的莱克多巴胺,TMS衍生化试剂BSTFA(N,O-双(三甲基硅烷基)三氟乙酰胺)衍生化,气相色谱-质谱联用(选择离子模式,选择离子为m/z163、m/z192、m/z234、m/z250)对衍生物检测分析,确定了动物组织中莱克多巴胺的定性、定量分析方法,该法检出限为0.5μg/L,衍生物的峰面积与样品浓度在1~1000μg/L范围内呈良好的线性关系,线性回归系数为0.9998。不同组织中不同莱克多巴胺加入量的加标回收率分别为:肝脏70.2%~75.4%,脂肪71.2%~84.7%,肾脏72.8%~80.9%,肌肉75.2%~86.4%;相对标准偏差为1.8%~5.6%。

关键词: 固相萃取, 气质联用, 莱克多巴胺, 选择离子监测

Abstract:  The residual veterinary drug of ractopamine in the animal tissues was extracted and purified by the method of liquid-liquid partition and solid phase extraction.The ractopamine was separated and assayed by gas chromatography spectrometry(according to the selected ion mode,the selected ions were:m/z163,m/z192,m/z234,m/z250)after derivatization of the purified sample with the TMS derivative reagent of BSTFA,and the qualitative and quantitative analysis methods were developed.Its limit of detection is 0.5μg/L,and there is a good linear correlationship between the ratio of peak areas and the concentration ofractopamine in the range of 1~1000μg/L.The correlative coefficient is 0.9998,the recoveries of different concentration of ractopamine in different tissues are:liver 70.2%~75.4%,fat 71.2%~84.7%,kidney 72.8%~80.9% and meat 75.2%~86.4%,respectively.The RSD of the method is between 1.8% and 5.6%.

Key words:  , solid phase extraction; gas chromatography-mass spectrometry; ractopamine; selected ion monitoring;