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dc.contributor.authorHuang, Xiaojiazh_CN
dc.contributor.authorChen, Linlizh_CN
dc.contributor.authorYuan, Dongxingzh_CN
dc.contributor.author黄晓佳zh_CN
dc.contributor.author袁东星zh_CN
dc.date.accessioned2015-07-22T03:12:15Z
dc.date.available2015-07-22T03:12:15Z
dc.date.issued2013-Nov 15zh_CN
dc.identifier.citationJOURNAL OF HAZARDOUS MATERIALS, 2013,262:121-129zh_CN
dc.identifier.otherWOS:000329595500016zh_CN
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/87929
dc.descriptionNational Natural Science Foundation of China [21077085, 21377105]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry; New Century Excellent Talents in Fujian Province Universityzh_CN
dc.description.abstractIn this study, a new stir cake sorptive extraction (SCSE) based on poly(4-vinylbenzoic aciddivinylbenzene) (VBADB) monolith was prepared. The effect of preparation conditions of monolith on extraction efficiencies was investigated in detail. Several characteristic techniques, such as elemental analysis, infrared spectroscopy, mercury intrusion porosimetry and scanning electron microscopy were used to characterize the monolithic material. The combination of SCSE-VBADB with high-performance liquid chromatography tandem mass spectrometry (HPLC/MS/MS) detection was developed for sensitive determination of ultra-trace beta-agonists in milk and swine urine samples. In order to obtain the optimal extraction conditions of SCSE-VBADB for beta-agonists, several extractive parameters, including pH values and ionic strength in sample matrix, extraction and desorption time were optimized. Under the optimum conditions, the limits of detection (S/N=3) for the target analytes were 0.007-0.030 mu g/L in milk and 0.002-0.011 mu g/L in swine urine, respectively. Excellent method reproducibility was achieved in terms of intraday and interday precisions, indicated by the RSDs of both <10.0%, respectively. Finally, the proposed method was successfully used to detect beta-agonists in different milk and swine urines samples. Acceptable recoveries ranged from 50.3% to 113% and 50.1% to 92.2% for milk and swine urine samples, respectively; and the RSDs for reproducibility were less than 8.0% for target analytes in all real samples. (C) 2013 Elsevier B.V. All rights reserved.zh_CN
dc.language.isoen_USzh_CN
dc.publisherELSEVIER SCIENCE BVzh_CN
dc.source.urihttp://dx.doi.org/10.1016/j.jhazmat.2013.08.008zh_CN
dc.subjectTANDEM MASS-SPECTROMETRYzh_CN
dc.subjectSOLID-PHASE MICROEXTRACTIONzh_CN
dc.subjectLIQUID-CHROMATOGRAPHYzh_CN
dc.subjectCLENBUTEROLzh_CN
dc.subjectBLOCKERSzh_CN
dc.subjectRACTOPAMINEzh_CN
dc.subjectLIVERzh_CN
dc.subjectBETA(2)-AGONISTSzh_CN
dc.subjectSALBUTAMOLzh_CN
dc.subjectRESIDUESzh_CN
dc.titlePreparation of stir cake sorptive extraction based on poly(4-vinylbenzoic acid-divinylbenzene) monolith and its application in sensitive determination of beta-agonists in milk and swine urine sampleszh_CN
dc.typeArticlezh_CN


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