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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

作者: Zhou, Dong-Dong 1 ; Cao, Yi-Wen 1 ; Chen, Min 1 ; Zhuang, Lv-Yun 1 ; Lv, Dai-Zhu 4 ; Wang, Ming-Yue 4 ; Yang, Zhong-Hua 1 ; Zeng, Yun-Liu 2 ;

作者机构: 1.Huazhong Agr Univ, Coll Plant Sci & Technol, Dept Plant Protect, Wuhan 430070, Peoples R China

2.Huazhong Agr Univ, Coll Hort & Forestry Sci, Wuhan 430070, Peoples R China

3.Huazhong Agr Univ, Coll Hort & Forestry Sci, Natl R&D Ctr Citrus Preservat, Natl Key Lab Germplasm Innovat & Utilizat Hort Cro, Wuhan, Peoples R China

4.Chinese Acad Trop Agr Sci, Anal & Testing Ctr, Haikou 571101, Peoples R China

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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