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Development of a modified QuEChERS method based on magnetic multiwalled carbon nanotubes for the simultaneous determination of veterinary drugs, pesticides and mycotoxins in eggs by UPLC-MS/MS

文献类型: 外文期刊

作者: Xu, Xiaoying 1 ; Han, Mei 2 ; Qiu, Shiting 2 ; Ho, Xue 2 ; Xu, Xu 3 ; Han, Mei 3 ; Qiu, Shiting 3 ; Ho, Xue 3 ; Xu, Xu 4 ;

作者机构: 1.Chinese Acad Sci, Chengdu Inst Organ Chem, Chengdu 610041, Sichuan, Peoples R China

2.Sichuan Acad Agr Sci, Ctr Anal & Testing, Chengdu 610066, Sichuan, Peoples R China

3.Minist Agr, Lab Qual & Safety Risk Assessment Agroprod Cheng, Chengdu 610066, Sichuan, Peoples R China

4.Univ Chinese Acad Sci, Beijing 100039, Peoples R China

关键词: Veterinary drugs; Pesticides; Mycotoxins; Eggs; QuEChERS; Fe3O4-MWCNTs

期刊名称: FOOD CHEMISTRY

ISSN: 0308-8146

年卷期: 2019 年 276 卷

页码:

收录情况: SCI

摘要: A modified QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) method was developed for the simultaneous determination of veterinary drugs, pesticides and mycotoxins in eggs by ultrahigh-pressure liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). Several extraction conditions were tested and optimized, and the obtained extraction efficiency of all the targeted compounds (particularly macrolides) could fulfill the requirements. In the purification procedure, magnetic multiwalled carbon nanotubes (Fe3O4-MWCNTs) were used as adsorbents, and an external magnet was utilized to achieve a faster adsorbent separation, compared to the traditional centrifugation process. The recoveries of all analytes were in the range of 60.5%-114.6% at three fortified levels with relative standard deviations (RSDs) of less than 20%, and the LOQs ranged from 0.1 mu g.kg(-1) to 17.3 mu g.kg(-1). This method was successfully applied to the analysis of egg samples, demonstrating its applicability and suitability for the routine analysis of multiclass residues in egg samples.

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