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Recognition characteristics of molecularly imprinted microspheres for triazine herbicides using hydrogen-bond array strategy and their analytical applications for corn and soil samples
- Source :
-
Journal of Chromatography A . Mar2011, Vol. 1218 Issue 10, p1340-1346. 7p. - Publication Year :
- 2011
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Abstract
- 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 5.8μg/kg and 0.14μg/kg and 87.4–105% and 94.6–101% for simetryne in corn and soil sample, respectively. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00219673
- Volume :
- 1218
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Journal of Chromatography A
- Publication Type :
- Academic Journal
- Accession number :
- 58097049
- Full Text :
- https://doi.org/10.1016/j.chroma.2011.01.008