数字农科院2.0

Development of magnetic COFs for simultaneous extraction and determination of aflatoxin B1 and benzo(a)pyrene

文献类型： 外文期刊

作者： Wang, Shenling;Wang, Liyuan;Wu, Kaiming;Yu, Li;Yue, Xiaofeng;Wu, Wenqin;Poapolathep, Amnart;Poapolathep, Saranya;Cifuentes, Alejandro;Ibanezd, Elena;Li, Peiwu;Hu, Xiaofeng;Zhang, Zhaowei

作者机构：

关键词： Co-occurrence;Aflatoxin B1;Benzo(a)pyrene;Simultaneous adsorption;Simultaneous detection

期刊名称： FOOD CHEMISTRY-X

ISSN： 2590-1575

年卷期： 2025 年 33 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Aflatoxin B1 (AFB1) and benzo(a)pyrene (B(a)P) are representative co-occurring contaminants at trace levels in food samples. However, their simultaneous extraction and detection remain challenging due to differing polarities, low concentrations, and matrix interferences. Herein, a hydroxyl-functionalized imine-linked magnetic covalent organic framework (Fe3O4@COFs-DhaTab) was synthesized via a one-pot, room-temperature condensation. Fe3O4@COFs-DhaTab enabled a one-sorbent, one-workflow extraction of AFB1 and B(a)P via synergistic it-it stacking and hydrogen bonding. Fe3O4@COFs-DhaTab exhibited equilibrium adsorption capacities of 3.64 and 8.23 mg/g for AFB1 and B(a)P, respectively. Coupled with high-performance liquid chromatography, the method enabled simultaneous detection of both analytes with detection limits of 0.031-0.039 mu g/kg. The method was validated across high-risk, matrix-diverse foods (edible oils, cereals, nuts, spices) and water, yielding recoveries of 84.4 %-113.6 % (AFB1) and 85.4 %-112.2 % (B(a)P). Fe3O4@COFs-DhaTab demonstrated excellent recyclability over three cycles. The cost-effective platform enables simultaneous extraction and quantification of co-occurring pollutants in complex matrices, enabling rapid and accurate multi-analyte analysis.

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