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Reference type: Journal
Authors: Cacho C, Turiel E, Martin-Esteban A, Ayala D, Perez-Conde C
Article Title: Semi-covalent imprinted polymer using propazine methacrylate as template molecule for the clean-up of triazines in soil and vegetable samples.
Publication date: 2006
Journal: Journal of Chromatography A
Volume: 1114
Issue: (2)
Page numbers: 255-262.
DOI: 10.1016/j.chroma.2006.02.051
Alternative URL: http://www.sciencedirect.com/science/article/B6TG8-4JFGFF1-2/2/e7a9b0b07c8f260ccd222c2f3b28d485

Abstract: A semi-covalent imprinted polymer was prepared by precipitation polymerisation using propazine methacrylate as template molecule, ethylene glycol dimethacrylate as cross-linker and toluene as porogen. After removal of propazine by basic hydrolysis of the covalent bond, the optimum loading, washing and elution conditions for the solid-phase extraction of the selected triazines were established. The binding sites present in the polymeric matrix were characterised by fitting the experimental results of several rebinding studies to the Langmuir-Freundlich isotherm. Subsequently, an analytical methodology based on molecularly imprinted solid-phase extraction (MISPE) was developed for the determination of several triazinic herbicides in soil and vegetable samples. Following this procedure, a good degree of clean-up of the sample extracts was easily achieved, allowing the HPLC-UV determination of selected triazines in complex samples at low concentration levels
Template and target information: propazine, propazine methacrylate
Author keywords: molecularly imprinted solid-phase extraction, Semi-covalent imprinted polymer, triazines, Soil samples, vegetable samples


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