[Simultaneous determination of nine beta2-agonists residues in urines by ultra performance liquid chromatography-electrospray tandem mass spectrometry].

@article{Jia2007SimultaneousDO,
  title={[Simultaneous determination of nine beta2-agonists residues in urines by ultra performance liquid chromatography-electrospray tandem mass spectrometry].},
  author={Xiaofei Jia and Jianqiang Qu and Juan Meng and Bing Shao},
  journal={Wei sheng yan jiu = Journal of hygiene research},
  year={2007},
  volume={36 4},
  pages={489-92}
}
OBJECTIVE To study the determination method of nine beta2-agonists residues in urine. METHODS Urine samples were duconjugated with beta-glucuronidase/arylsulfatase enzyme in acetate buffer and deproteinized by perchloric acid, and then adjusted pH4.0. Sample concentration and purification were performed by Oasis HLB, Oasis MCX. The separation was… CONTINUE READING