Determination of azole fungicide residues in fruits and vegetables by magnetic solid phase extraction based on magnetic MOF sorbent in combination with high performance liquid chromatography

文献类型： 外文期刊

第一作者： Zhou, Dong-Dong

作者： Zhou, Dong-Dong;Cao, Yi-Wen;Chen, Min;Zhuang, Lv-Yun;Yang, Zhong-Hua;Zeng, Yun-Liu;Zeng, Yun-Liu;Lv, Dai-Zhu;Wang, Ming-Yue

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关键词： Magnetic solid phase extraction (MSPE); DUT-5; High performance liquid chromatography; (HPLC); Azole fungicides; Fruits and vegetables

期刊名称：MICROCHEMICAL JOURNAL （ 影响因子：4.8； 五年影响因子：4.5 ）

ISSN： 0026-265X

年卷期： 2023 年 187 卷

页码：

收录情况： SCI

摘要： A sample pre-treatment technology, based on magnetic MOF composite Fe3O4@DUT-5 as the adsorbent, com-bined with high performance liquid chromatography (HPLC) has been developed and used for the trace analysis of azole fungicide residues in fruits and vegetables. Characterization analysis shows that Fe3O4@DUT-5 has good stability and excellent saturation magnetism. Under the optimal conditions, the satisfactory enrichment factors (69.6-96.4), and good linearity (10-1000 mu g L-1) could be achieved, as well as the low limits of detection (0.054 to 0.313 mu g L-1) were proved to be below the maximum residue limits (MRLs) of azole fungicides in agricultural products (10.0 mu g kg-1). Additionally, the proposed method has been successfully applied to the determination of target analytes in six fruits and vegetables. The achieved recovery (62.3-100.8%) and reproducibility (lower than 6.4%) meet the requirements of pesticide residue analysis. Moreover, the high adsorption capacity and stability remain unchanged after 5 cycles. And it has a strong saturation magnetization value, which provides a strong guarantee for recycling. As a novel adsorbent, Fe3O4@DUT-5 showed great potential in the extraction of pesticide residues in fruits and vegetables.

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