College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China.
College of Chemical Engineering and Environment, China University of Petroleum-Beijing, Beijing 102249, China.
Food Chem. 2025 Feb 1;464(Pt 2):141655. doi: 10.1016/j.foodchem.2024.141655. Epub 2024 Oct 15.
Polychlorinated biphenyls (PCBs) have been known pollutants, which are ubiquitous in various matrix, even in some food products and beverages like fruit juices. It is of great importance to develop efficient and simple method to detect them in such matrix. In this work, an effective magnetic composite integrating the advantages of the magnism of CoFeO, hydrophilicity and multisites of TiC and high adsorption properties of polyaniline (CoFeO@TiC@PANI) was designed and synthesized. CoFeO@TiC@PANI-based magnetic solid-phase extraction coupled with gas chromatography-tandem mass spectrometry was established for determination of nine PCBs in fruit juices. The developed method achieved low detection limits of 0.4-0.8 ng L. The established method was validated with three beverages and achieved good spiked recoveries ranging from 77.2 % to 104.7 %. These findings exhibited that the established method was very simple, efficient, and credible for the analysis of PCBs in food, environmental, and other fields.
多氯联苯 (PCBs) 是一种已知的污染物，广泛存在于各种基质中，甚至在一些食品和饮料如果汁中也存在。因此，开发一种在这些基质中检测它们的高效、简单的方法非常重要。在这项工作中，设计并合成了一种将 CoFeO 的磁性、TiC 的亲水性和多活性位点以及聚苯胺的高吸附性能结合在一起的有效磁性复合材料（CoFeO@TiC@PANI）。基于 CoFeO@TiC@PANI 的磁性固相萃取与气相色谱-串联质谱联用，建立了用于测定果汁中九种 PCBs 的方法。该方法的检测限低至 0.4-0.8ngL。该方法对三种饮料进行了验证，得到了 77.2%至 104.7%的良好加标回收率。这些结果表明，该方法非常简单、高效、可靠，可用于食品、环境等领域的 PCBs 分析。
