Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, PR China.
Beijing Key Laboratory of Flavor Chemistry, Beijing Technology and Business University, Beijing 100048, PR China.
Food Chem. 2024 May 15;440:138264. doi: 10.1016/j.foodchem.2023.138264. Epub 2023 Dec 26.
A simple ultrasonic synthesis strategy was developed for a novel magnetic covalent organic framework. Firstly, the FeO nanoparticles were encapsulated by imine-type COF, which generated by the Schiff reaction of 4,4',4''-(1,3,5-Triazine-2,4,6-triyl)-trianiline (TAPT) and tris(4-formylphenyl)-amine (TFPA) using ultrasonic synthesis method within 2 h. The synthesised nanocomposites showed a sizeable specific surface area, and high adsorption capacity. A fast, sensitive MSPE method with FeO@TAPT-TFPA-COF as adsorbent for analysing bisphenol compounds was developed. This method's advantages were simple operation, short extraction time, and avoidance of the use of centrifugal equipment. The method validation indicate that this method exhibited superior linearity, and detection limits range between 0.33 and 0.60 μg L. The recoveries of BPs ranged from 74.7 % to 107.0 %, with relative standard deviations of less than 3.8 % in water, milk, vinegar, and soy sauce samples. The proposed method was successfully applied for extracting BPs in food samples.
一种新型磁性共价有机框架的简单超声合成策略被开发出来。首先，通过超声合成法，在 2 小时内，将 4,4',4''-(1,3,5-三嗪-2,4,6-三基)三苯胺（TAPT）和三(4-醛基苯基)-胺（TFPA）的席夫反应将 FeO 纳米粒子包裹在亚胺型 COF 中。所合成的纳米复合材料具有较大的比表面积和高吸附能力。使用 FeO@TAPT-TFPA-COF 作为吸附剂，开发了一种快速、灵敏的 MSPE 方法来分析双酚化合物。该方法的优点是操作简单、提取时间短，并且避免了使用离心设备。方法验证表明，该方法具有优越的线性和检测限范围在 0.33 至 0.60 μg/L 之间。BP 的回收率在水、牛奶、醋和酱油样品中在 74.7%至 107.0%之间，相对标准偏差小于 3.8%。该方法成功地应用于食品样品中 BP 的提取。
