g-C3N4/Fe3O4 Nanocomposites as Adsorbents Analyzed by UPLC-MS/MS for Highly Sensitive Simultaneous Determination of 27 Mycotoxins in Maize: Aiming at Increasing Purification Efficiency and Reducing Time
文献类型： 外文期刊
作者： Ma, Shuai 1 ; Pan, Li gang 2 ; You, Tianyan 1 ; Wang, Kun 1 ;
作者机构： 1.Jiangsu Univ, Sch Chem & Chem Engn, Key Lab Modern Agr Equipment & Technol, Zhenjiang 212013, Jiangsu, Peoples R China
2.Beijing Res Ctr Agr Stand & Testing, Beijing 100097, Peoples R China
3.Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Key Lab Sensor Anal Tumor Marker, Minist Educ, Qingdao 266042, Peoples R China
关键词： g-C3N4/Fe3O4; QuEChERS; mycotoxins; UPLC-MS/MS; maize
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：4.192； 五年影响因子：4.289 ）
ISSN： 0021-8561
年卷期： 2021 年 69 卷 16 期
页码：
收录情况： SCI
摘要： According to known studies, numerous mycotoxins have been found simultaneously in foods and have a certain expansion toxicity, so the simultaneous detection of multiple mycotoxins is absolutely critical. In this article, multifunctional magnetic g-C3N4/Fe3O4 nanocomposites have been fabricated to employ as modified QuEChERS adsorbents. In addition, they were also used in conjunction with ultrahigh-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS), an accurate quantitative approach, to analyze 27 mycotoxins in maize. The improved method not only has a powerful adsorption effect on the complex matrix by g-C3N4/Fe3O4 but also enables magnetic separation from the sample solution. Experiments proved that this method can exhibit good linearity under the appropriate and optimal external environment (r(2) >= 0.9954), high sensitivity (the threshold of detection limit is 0.0004-0.6226 mu g kg(-1), and the threshold of quantification limit is 0.0014-2.0753 mu g kg(-1)), adequate recoveries (77.81-115.21%), and excellent repeatability (with a threshold of intraday precision of 1.5-10.8% and interday precision in the range of 2.9-12.5%). In practice this method has been used to evaluate a variety of mycotoxins in maize specimens, and certain actual outcomes have been achieved.
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