College of Food Science and Technology, Hebei Agricultural University, Baoding 071001, China; College of Science, Hebei Agricultural University, Baoding 071001, China.
College of Science, Hebei Agricultural University, Baoding 071001, China.
Food Chem. 2022 Jul 30;383:132599. doi: 10.1016/j.foodchem.2022.132599. Epub 2022 Mar 1.
Natural rutin with abundant hydroxyl groups was used as a green monomer to synthesize hydroxyl-functional magnetic porous organic polymer (named Rut-MOP) through environmentally-benign diazo-coupling reaction for the first time. The Rut-MOP displayed high extraction capability for neonicotinoid insecticides (thiamethoxam, imidacloprid, acetamiprid and thiacloprid). Thus, a Rut-MOP based magnetic solid-phase extraction method combined with high performance liquid chromatography was established for sensitive determination of neonicotinoid insecticides in lemon juice and honey samples. Under optimized conditions, the linear response of neonicotinoids was 0.1-100.0 ng mL for lemon juice and 8.0-1000.0 ng g for honey. The limits of detection (S/N = 3) were 0.03-0.04 ng mL and 2.5-3.0 ng g for lemon juice and honey, respectively. The method recoveries were 82-118% with the relative standard deviations of 1.9-7.6%. The results demonstrate that the Rut-MOP based method can be served as a good alternative for the sensitive analysis of neonicotinoid insecticides in lemon juice and honey.
天然芸香苷（芦丁）因其含有丰富的羟基基团，首次被用作绿色单体，通过环境友好的重氮偶联反应合成了具有羟基功能的磁性多孔有机聚合物（Rut-MOP）。Rut-MOP 对新烟碱类杀虫剂（噻虫嗪、吡虫啉、噻虫胺和噻虫砜）具有高萃取能力。因此，建立了一种基于 Rut-MOP 的磁性固相萃取方法，并结合高效液相色谱法，用于柠檬果汁和蜂蜜样品中新烟碱类杀虫剂的灵敏检测。在优化条件下，新烟碱类杀虫剂在柠檬果汁中的线性响应范围为 0.1-100.0ngmL，在蜂蜜中的线性响应范围为 8.0-1000.0ngg。柠檬果汁和蜂蜜的检出限（S/N=3）分别为 0.03-0.04ngmL 和 2.5-3.0ngg。方法回收率为 82-118%，相对标准偏差为 1.9-7.6%。结果表明，该方法可作为柠檬果汁和蜂蜜中新型烟碱类杀虫剂灵敏分析的良好替代方法。
