当前位置: X-MOL 学术Talanta › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Application of pseudo-template molecularly imprinted polymers by atom transfer radical polymerization to the solid-phase extraction of pyrethroids
Talanta ( IF 6.1 ) Pub Date : 2017-09-01 , DOI: 10.1016/j.talanta.2017.08.100
Ming Zhang , Juan He , Yanzheng Shen , Weiye He , Yuanyuan Li , Dongxin Zhao , Shusheng Zhang

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 1.40 mg g−1, respectively, while the non-imprinted polymers were 1.20, 1.13, 1.25, 1.05, 1.20, 1.23 and 1.32 mg g−1, 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.



中文翻译:

原子转移自由基聚合伪模板分子印迹聚合物在拟除虫菊酯固相萃取中的应用

使用片段印迹技术,通过原子转移自由基聚合反应,制备了具有分子识别能力的拟除虫菊酯同源物的聚合物基吸附介质。利用苯基醚-联苯共晶作为伪模板分子,并通过固相萃取和气相色谱法评估所制备的吸附介质。通过气相色谱将介质用作固相萃取填料,评估了介质对拟除虫菊酯的选择性。结果表明,联苯菊酯,联苯丙菊酯,苄氯菊酯,氯氰菊酯,氰戊菊酯,德斯班和五氯硝基苯对分子印迹聚合物的吸收量分别为2.32、2.12、2.18、2.20、2.30、1.30和1.40 mg g -1非压印聚合物分别为1.20、1.13、1.25、1.05、1.20、1.23和1.32 mg g -1。基于分子印迹固相萃取柱技术的重新结合测试显示,加标了7种杀虫剂的蜂蜜样品的回收率在88.5-106.2%之内,相对标准偏差为2.38-5.63%。最终,该方法成功地应用于蜂蜜样品中拟除虫菊酯的分析。

更新日期:2017-09-01
down
wechat
bug