Magnetic metal-organic framework MIL-100 (Fe)/polyethyleneimine composite as an adsorbent for the magnetic solid-phase extraction of fungicides and their determination using HPLC-UV

文献类型： 外文期刊

第一作者： Senosy, Ibrahim Abdelhai

作者： Senosy, Ibrahim Abdelhai;Lu, Zhi-Heng;Guan, Xiao-Yu;Yang, Zhong-Hua;Li, Jian-Hong;Guo, Hao-Ming;Abdelrahman, Talat Mahmoud;Mmby, Mohamed;Senosy, Ibrahim Abdelhai;Gbiliy, Asmaa;Zhang, Xin-Zhong;Abdelrahman, Talat Mahmoud;Mmby, Mohamed

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关键词： Magnetic solid-phase extraction; Metal-organic frameworks; Polyethyleneimine; Fungicide residue

期刊名称：MICROCHIMICA ACTA （ 影响因子：5.833； 五年影响因子：5.357 ）

ISSN： 0026-3672

年卷期： 2021 年 188 卷 2 期

页码：

收录情况： SCI

摘要： Fe3O4@MIL-100 (Fe)/PEI are used for the first time as an adsorbent material for the extraction of pesticide residues (epoxiconazole, flusilazole, tebuconazole, and triadimefon) from food matrices. The adsorbent proposed (Fe3O4@MIL-100(Fe)/PEI) was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), thermogravimetric (TG) analysis, and vibrating sample magnetometer (VSM) techniques to evaluate the properties of the sorbent. Then, the Fe3O4@MIL-100 (Fe)/PEI was employed for the quantification of the four triazole fungicides in fruits and vegetables (apple, orange, tomato, cabbage, and cucumber) using HPLC-UV for separation and detection. During the extraction process, the main parameters such as amount of adsorbent, extraction time, pH value, ionic strength, eluting solvent, and eluting volume were optimized. Under the optimum conditions, good linearity of this method was observed for all analytes, with correlation coefficients (R-2)>= 0.9908. The limits of detection (LODs) ranged from 0.021-3.04 mu g kg(-1). The extraction recoveries of the four triazole fungicides varied from 73.9 to 109.4% with relative standard deviations (RSD) in the range 0.5 to 6.2%. Compared with other MOFs, the modification of Fe3O4@MIL-100 (Fe) with PEI shows high efficient adsorption due to the combined benefits of MIL-100 (Fe) and PEI. The material is easily synthesized, has good stability, and is of low cost.

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