金属有机骨架修饰共价有机骨架的简易制备及其高效分散固相萃取食品中有毒碱性染料的研究

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2025-03-05 DOI:10.1016/j.foodchem.2025.143728

Weidan Yang, Shaowei Wu, Lu Xu, Jie Pang, Zhiming Yan

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引用次数: 0

摘要

高性能吸附剂对于提高样品预处理效率、确保分析结果的准确性和精确性至关重要。本研究用金属有机框架 ZIF-8 对共价有机框架 COF-SCU1 进行改性，以高效萃取食品中的有毒碱性染料。与 COF-SCU1 相比，所制备的 COF-SCU1@ZIF-8 具有更好的分散性和更多的表面负电荷，从而提高了对金胺 O、罗丹明 B、碱性橙 21、碱性橙 22 和亚甲基蓝的吸附性能。基于 COF-SCU1@ZIF-8 的有毒碱性染料分散固相萃取（D-SPE）耗用的吸附剂和溶剂极少，且操作时间短。建立了基于D-SPE和高效液相色谱法测定有毒碱性染料的分析方法，检出限为0.9-1.6 ng mL-1。将所建立的方法应用于实际食品样品中有毒碱性染料的检测，回收率为 88.20-105.83%。

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Facile preparation of metal organic framework modified covalent organic framework for efficient dispersive solid-phase extraction of toxic basic dyes in food

High performance adsorbents are crucial for improving the efficiency of sample pretreatment and ensuring the accuracy and precision of analytical results. In this study, covalent organic framework COF-SCU1 was modified with metal-organic framework ZIF-8 for efficient extraction of toxic basic dyes in food. The prepared COF-SCU1@ZIF-8 exhibited improved dispersibility and more surface negative charges compared to COF-SCU1, thereby showing enhanced adsorption performance for auramine O, rhodamine B, basic orange 21, basic orange 22 and methylene blue. The dispersive solid-phase extraction (D-SPE) for toxic basic dyes based on COF-SCU1@ZIF-8 consumed tiny amount of adsorbent and solvent as well as short operation time. An analytical method for the determination of toxic basic dyes was developed based on D-SPE and high-performance liquid chromatography with detection limits of 0.9–1.6 ng mL⁻¹. The developed method was applied to the detection of toxic basic dyes in real food samples with recoveries of 88.20–105.83 %.

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.