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Reference type: Journal
Authors: Tamayo FG, Casillas JL, Martin-Esteban A
Article Title: Evaluation of new selective molecularly imprinted polymers prepared by precipitation polymerisation for the extraction of phenylurea herbicides.
Publication date: 2005
Journal: Journal of Chromatography A
Volume: 1069
Issue: (2)
Page numbers: 173-181.
DOI: 10.1016/j.chroma.2005.02.029
Alternative URL: http://www.sciencedirect.com/science/article/B6TG8-4FJGW77-8/2/ee77ffc81eda7c60128426c8b6ba8b74

Abstract: Three different molecularly imprinted polymers (MIPs) have been prepared by precipitation polymerisation using linuron (LIN) or isoproturon (IPN) (phenylurea herbicides) as templates and methacrylic acid (MAA) or trifluormethacrylic acid (TFMAA) as functional monomers. The ability of the different polymers to selectively rebind not only the template but also other phenylurea herbicides has been evaluated. In parallel, the influence of the different templates and functional monomers used during polymers synthesis on the performance of the obtained MIPs was also studied through different rebinding experiments. The experimental binding isotherms were fitted to the Langmuir-Freundlich isotherm allowing to describe the kind of binding sites present in the imprinted polymers under study. It was concluded that TFMAA-based polymer using IPN as template presents the best properties to be used as a selective sorbent for the extraction of phenylurea herbicides
Template and target information: linuron, LIN, isoproturon, IPN, phenylurea herbicides
Author keywords: imprinted polymers, precipitation polymerisation, isotherms, binding sites, phenylurea herbicides, Solid-phase extraction


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