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

第一作者： Ma, Shuai

作者： Ma, Shuai;You, Tianyan;Wang, Kun;Ma, Shuai;Pan, Li gang;Wang, Kun

作者机构：

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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