School of Chemical Engineering and Environment, Henan University of Technology, Zhengzhou 450001, PR China.
School of Chemical Engineering and Environment, Henan University of Technology, Zhengzhou 450001, PR China.
Talanta. 2018 Feb 1;178:1011-1016. doi: 10.1016/j.talanta.2017.08.100. Epub 2017 Sep 1.
A polymer-based adsorption medium with molecular recognition ability for homologs of pyrethroids was prepared by atom transfer radical polymer iration using a fragment imprinting technique. Phenyl ether-biphenyl eutectic was utilized as a pseudo-template molecule, and the adsorption medium prepared was evaluated by solid-phase extraction and gas chromatography. Selectivity of the medium for pyrethroids was evaluated using it as solid phase extraction packing by Gas Chromatography. The results demonstrated that the absorption amount of bifenthrin, fenpropathrin, permethrin, cypermethrin, fenvalerate, Dursban and pentachloronitrobenzene for molecularly imprinted polymers were 2.32, 2.12, 2.18, 2.20, 2.30, 1.30 and 1.40mgg, respectively, while the non-imprinted polymers were 1.20, 1.13, 1.25, 1.05, 1.20, 1.23 and 1.32mgg, respectively. The rebinding test based on the molecularly imprinted solid phase extraction column technique showed the recoveries of honey sample spiked with seven insecticides within 88.5-106.2%, with relative standard deviations of 2.38-5.63%. Finally, the method was successfully applied to the analysis of pyrethroids in a honey sample.
一种基于聚合物的吸附介质，具有对拟除虫菊酯同系物的分子识别能力，是通过原子转移自由基聚合反应，利用片段印迹技术制备的。苯醚-联苯共晶被用作伪模板分子，通过固相萃取和气相色谱法对制备的吸附介质进行评估。通过气相色谱法将该介质用作固相萃取填料，评估其对拟除虫菊酯的选择性。结果表明，分子印迹聚合物对呋虫胺、甲氰菊酯、氯菊酯、氯氰菊酯、氰戊菊酯、敌百虫和五氯硝基苯的吸附量分别为 2.32、2.12、2.18、2.20、2.30、1.30 和 1.40mg/g，而非印迹聚合物的吸附量分别为 1.20、1.13、1.25、1.05、1.20、1.23 和 1.32mg/g。基于分子印迹固相萃取柱技术的复配试验表明，蜂蜜样品中添加的七种杀虫剂的回收率在 88.5-106.2%之间，相对标准偏差为 2.38-5.63%。最后，该方法成功应用于蜂蜜样品中拟除虫菊酯的分析。
