Department of Chemistry, College of Science, Hebei Agricultural University, Baoding 071001, China.
Department of Chemistry, College of Science, Hebei Agricultural University, Baoding 071001, China.
Food Chem. 2020 Aug 30;322:126770. doi: 10.1016/j.foodchem.2020.126770. Epub 2020 Apr 7.
Honey, a highly nutritious functional food, might be contaminated by polycyclic aromatic hydrocarbons (PAHs) during its production and/or harvest. The preconcentration and analysis of trace levels of PAHs from the complex sample matrices like honey still poses challenges for analytical researchers. In this study, three different covalent triazine-based frameworks (CTFs) were synthesized and explored as the solid-phase microextraction (SPME) coating for the extraction of some PAHs from various honey samples. Among the CTFs, cyanuric chloride-p-quaterphenyl (CC-QP) exhibited the highest extraction capability toward PAHs due to its largest specific surface area and π-electrons system. Under the optimum experimental conditions, the CC-QP based SPME method exhibited wide linearity (0.10-100 ng g), low limits of detection (0.03-0.19 ng g) and good reproducibility (relative standard deviations < 9.9%). The new SPME method coupled with chromatography-mass spectrometry detection was successfully applied for the determination of PAHs in honey samples with satisfactory recoveries (82.0-116.8%).
亲爱的，蜂蜜是一种高营养的功能性食品，但在生产和/或收获过程中可能会被多环芳烃（PAHs）污染。对于分析研究人员来说，从蜂蜜等复杂样品基质中痕量水平的 PAHs 的预浓缩和分析仍然具有挑战性。在本研究中，合成了三种不同的基于共价三嗪的骨架（CTFs），并将其探索为用于从各种蜂蜜样品中提取一些 PAHs 的固相微萃取（SPME）涂层。在 CTFs 中，由于其最大的比表面积和π-电子体系，三聚氯氰-对四苯（CC-QP）对 PAHs 表现出最高的萃取能力。在最佳实验条件下，基于 CC-QP 的 SPME 方法表现出宽的线性范围（0.10-100ng g）、低检测限（0.03-0.19ng g）和良好的重现性（相对标准偏差<9.9%）。新的 SPME 方法与色谱-质谱检测联用，成功应用于蜂蜜样品中 PAHs 的测定，回收率令人满意（82.0-116.8%）。
