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Reference type: Journal
Authors: Cacho C, Schweitz L, Turiel E, Pérez-Conde C
Article Title: Molecularly imprinted capillary electrochromatography for selective determination of thiabendazole in citrus samples.
Publication date: 2008
Journal: Journal of Chromatography A
Volume: 1179
Issue: (2)
Page numbers: 216-223.
DOI: 10.1016/j.chroma.2007.11.097
Alternative URL: http://eprints.ucm.es/9670/1/T31022.pdf

Abstract: In this work, the suitability of the combination of molecular imprinting and capillary electrochromatography (MIP-CEC) to be used as powerful tool in environmental or food analysis has been for the first time studied and successfully demonstrated. A molecularly imprinted monolith (MIM) has been synthesised and evaluated as stationary phase for the selective determination of the fungicide thiabendazole (TBZ) in citrus samples by non-aqueous capillary electrochromatography. The influence of the mobile phase composition, the voltage of the power supply and the separation temperature on the recognition of TBZ by the imprinted polymer has been evaluated, and the imprint effect in the MIM was clearly demonstrated. Once optimum recognition conditions were established, other variables affecting mechanical properties and chromatographic performance of MIM were adjusted using computational approach. The high selectivity achieved by the MIP-CEC developed procedure allowed unambiguous detection and quantification of TBZ in citrus samples by direct injection of the crude sample extracts, without any previous clean-up, in less than 6 min. The developed method was properly validated and the calculated detection limits were bellow the established maximum residue limits (MRLs), clearly demonstrating the suitability of the method to be used for the control of the selected fungicide
Template and target information: thiabendazole, TBZ
Author keywords: Molecularly imprinted polymers, capillary electrochromatography, monolith, Thiabendazole, Citrus samples

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