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Reference type: Journal
Authors: Wu SQ, Xu ZG, Yuan QH, Tang YW, Zuo XJ, Lai JP
Article Title: Recognition characteristics of molecularly imprinted microspheres for triazine herbicides using hydrogen-bond array strategy and their analytical applications for corn and soil samples.
Publication date: 2011
Journal: Journal of Chromatography A
Volume: 1218
Issue: (10)
Page numbers: 1340-1346.
DOI: 10.1016/j.chroma.2011.01.008
Alternative URL: http://www.sciencedirect.com/science/article/B6TG8-51XH99V-4/2/a3acf1749349958b9779e9d50181d5c0

Abstract: The homogeneous molecularly imprinted microspheres (MIMs) based on a biologically inspired hydrogen-bond array were prepared using allobarbital as the novel functional monomer and divinylbenzene as the cross-linker. The host-guest binding characteristics were examined by molecular simulation and infrared spectroscopy. The resultant MIMs were evaluated using high performance liquid chromatography and solid-phase extraction. The results obtained demonstrate that the good imprinting effect and the excellent selectivity of MIMs are mainly due to the interaction involving the formation of three-point hydrogen bond between host and guest. The complete baseline separation was obtained for five triazine analogues and a metabolite on the MIM HPLC column. The MIMs were further successfully used as a specific sorbent for selective extraction of simetryne from corn and soil samples by molecularly imprinted solid phase extraction. Detection limits and recoveries were 5.8 μg/kg and 0.14 μg/kg and 87.4-105% and 94.6-101% for simetryne in corn and soil sample, respectively
Template and target information: triazine herbicides, simetryne, SMT, ametryn, terbutryn
Author keywords: molecularly imprinted microspheres, Hydrogen-bond array, Homogeneous interaction, Simetryne, precipitation polymerization


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