Chinese Journal of Chromatography ›› 2016, Vol. 34 ›› Issue (2): 170-175.DOI: 10.3724/SP.J.1123.2015.08033

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Simultaneous determination of the residues of four β2-agonists in animal foods by modified high performance liquid chromatography-tandem mass spectrometry

LI Juan, QIAO Qingdong, ZHUANG Jingxin, WANG Cuiping   

  1. Beijing Changping District Center for Disease Control and Prevention, Beijing 102200, China
  • Received:2015-08-27 Online:2016-02-08 Published:2012-09-11
  • Supported by:

    Program of the State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences (Grant No. KF2014-04).

Abstract:

An analytical method was developed to simultaneously determine the residues of four β2-agonists in animal foods by high performance liquid chromatography/electrospray-tandem mass spectrometry (HPLC-MS/MS). Samples were extracted with 5% (mass fraction) trichloracetic acid, and then cleaned up by two solid phase extraction cartridges (HLB and ProElut PXC). Quantification of the four β2-agonists was achieved by HPLC-MS/MS in multiple reaction monitoring (MRM) using internal standard method. The limits of detection (S/N=3) of clenbuterol, salbutamol, ractopamine and terbutaline were 0.05, 0.05, 0.05 and 0.2 μ g/kg, and the limits of quantification (S/N=10) were 0.25, 0.25, 0.1 and 0.5 μ g/kg, respectively. The average recoveries of the four β2-agonists spiked in blank samples at the spiked levels of 2.5, 5 and 10 μ g/kg were 90.3%-120.5% with the relative standard deviation (RSD) range of 1.60%-9.33%. The method is reliable, sensitive, good recovery and repeatability. It is suitable for the determination of the residues of the four β2-agonists in animal foods.

Key words: β2-agonists, acidolysis extraction, animal foods, high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS), solid phase extraction

CLC Number: