UPLC-ESI-MS-MS Determination of Three beta(2)-Agonists in Pork
文献类型: 外文期刊
第一作者: Zheng, Hong
作者: Zheng, Hong;Yang, Guo-Sheng;Deng, Li-Gang;Lu, Xiao;Zhao, Shan-Cang;Guo, Chang-Ying;Mao, Jiang-Sheng;Wang, Yu-Tao;Deng, Li-Gang;Lu, Xiao;Zhao, Shan-Cang;Guo, Chang-Ying;Mao, Jiang-Sheng;Wang, Yu-Tao;Yang, Guo-Sheng;Aboul-Enein, Hassan Y.;Aboul-Enein, Hassan Y.
作者机构:
关键词: Ultra performance liquid chromatography;Mass spectrometry;Solid phase extraction;Ion suppression;beta(2)-Agonists in pork
期刊名称:CHROMATOGRAPHIA ( 影响因子:2.044; 五年影响因子:1.725 )
ISSN: 0009-5893
年卷期: 2010 年 72 卷 1-2 期
页码:
收录情况: SCI
摘要: Matrix-induced ion suppression and different polarity usually interfere with extraction, purification and drug analysis, therefore a method was developed for determination of three beta(2)-agonists namely, salbutamol, ractopamine and clenbuterol in pork. After enzymatic hydrolysis, a 2.0 g homogenized pork sample was extracted, with perchloric acid-methanol (9:1, v/v) to precipitate protein, and then cleaned by mixed-mode Bond Elut Plexa PCX solid phase extraction (SPE) cartridges. Finally, the evaporated extract was reconstituted to 2 mL with initial mobile phase. The analytes were determinated by ultra performance liquid chromatography coupled with electrospray ionization tandem mass spectrometry (UPLC-ESI-MS-MS). Results indicate that the method is effective to reduce ion suppression phenomena. Recoveries of the three beta(2)-agonists in most cases were better than 85% with relative standard deviations between 2 and 11%. The limits of detection (LOD) were 0.07-0.12 mu g kg(-1). The limits of quantitation (LOQ) ranged from 0.22-0.38 mu g kg(-1).
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