Determination of Four Kinds of beta-Agonists in Swine Urine by Molecularly Imprinted Solid Phase Extraction Followed Gas Chromatography Coupled Mass Spectrometry
文献类型: 外文期刊
第一作者: Wang Pei-Long
作者: Wang Pei-Long;Fan Li;Su Xiao-Ou;Ye Zhi-Hua
作者机构:
关键词: Molecular imprinted solid phase extraction;beta-Agonists;Gas chromatography-mass spectrometry
期刊名称:CHINESE JOURNAL OF ANALYTICAL CHEMISTRY ( 影响因子:1.134; 五年影响因子:0.909 )
ISSN: 0253-3820
年卷期: 2012 年 40 卷 3 期
页码:
收录情况: SCI
摘要: A simple and rapid method for the determination of beta-agonists including Clorprenaline, Mabuterol, clenbuterol and ractopamine in swine urine by using molecular imprinted solid phase extraction followed with gas chromatography-mass spectrometry has been developed. 4 beta-Agonists in swine urine were concentrated and cleaned-up by using molecularly imprinted polymer (MIP) solid phase extraction cartridge, the comparison study of clean up effect for the MIP and common solid phase extraction cartridge was carried out. Then the purified sample was derivatized by using N, O-bis (trimethylsilyl)trifluoroacetamide (BSTFA) containing 1% trimethylchlorosilane (TMCS) and were determined by gas chromatography-mass spectrometry(selected ion mode). Under the optimized conditions, there is a good linear correlation (the calibration coefficient is above 0.99) between the ratio of peak areas and the concentration of beta-agonists in the range of 5-100 mu g/L. the limit of quantitative (LOQ) is 0.5 mu g/L for ractopamine and 0.2 mu g/L for other beta-agonists in swine urine samples, the recoveries of different quantities of the beta-agonists spiked in swine urine are between 75.1% and 97.5%, the relative standard deviations (RSD) are below 10%. The developing method was applied to the determination of clenbuterol and ractopamine in real urine samples, the precision of the results is good, the manipulation of the developed method is simple and fast comparing to other methods.
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