MIL-101(Cr) Nanomaterials as Solid Phase Extraction Adsorbents for Determination of Multiple Mycotoxins in Wheat and Maize by Ultra-High Performance Liquid Chromatography-Tandem Mass Spectrometry
文献类型： 外文期刊
作者： Guo, Da-Kai 1 ; Guo, Wen-Bo 1 ; Huang, Qing-Wen 1 ; Hu, Zheng 1 ; Fan, Kai 1 ; Han, Zheng 1 ; Nie, Dong-Xia 1 ;
作者机构： 1.Shanghai Acad Agr Sci, Inst Agrofood Stand & Testing Technol, Shanghai 201403, Peoples R China
关键词： Solid phase extraction; Mycotoxins; MIL-101(Cr); Ultra-high performance liquid chromatography-tandem mass spectrometry
期刊名称：CHINESE JOURNAL OF ANALYTICAL CHEMISTRY （ 影响因子：1.2； 五年影响因子：1.0 ）
ISSN： 0253-3820
年卷期： 2023 年 51 卷 8 期
页码：
收录情况： SCI
摘要： An efficient and rapid solid phase extraction (SPE) method was established for purification and enrichment of nine kinds of mycotoxins in agricultural products using metal-organic frameworks (MOFs) MIL-101(Cr) as adsorbents. Scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy and specific surface area analysis were used to characterize MIL-101(Cr), and the results proved that the synthesized MIL-101(Cr) exhibited a regular octahedral configuration and high specific surface area (3137 m(2)/g). The experimental conditions which could affect SPE were investigated, including the loading solution, eluent and the dosage of adsorbent. The optimal conditions for SPE were: 2%(V/V) acetonitrile aqueous solution as loading solution, n-hexane as washing solution, 2 mL acetone containing 1% (V/V) formic acid as eluent, and adsorbent dosage of 20 mg. Under the optimal extraction conditions, combined with ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS), the method showed good linearity (R-2 >= 0.991) toward nine kinds of mycotoxins. The limits of quantification were 0.10-1.0 mu g/kg, the recoveries were 83.5%-116.6%, and the RSDs were 1.8%-12.5%. This method was demonstrated to be easy in operation with high sensitivity, which was applicable to simultaneous determination of nine kinds of mycotoxins in wheat and maize samples.
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