PMID- 18154977 OWN - NLM STAT- MEDLINE DCOM- 20080325 LR - 20191210 IS - 0021-9673 (Print) IS - 0021-9673 (Linking) VI - 1179 IP - 2 DP - 2008 Feb 1 TI - Molecularly imprinted capillary electrochromatography for selective determination of thiabendazole in citrus samples. PG - 216-23 AB - 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 below the established maximum residue limits (MRLs), clearly demonstrating the suitability of the method to be used for the control of the selected fungicide. FAU - Cacho, Carmen AU - Cacho C AD - Departamento de Quimica Analitica, Facultad de Ciencias Quimicas, Universidad Complutense de Madrid, Ciudad Universitaria s/n, 28040 Madrid, Spain. FAU - Schweitz, Leif AU - Schweitz L FAU - Turiel, Esther AU - Turiel E FAU - Perez-Conde, Concepcion AU - Perez-Conde C LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Validation Study DEP - 20071203 PL - Netherlands TA - J Chromatogr A JT - Journal of chromatography. A JID - 9318488 RN - N1Q45E87DT (Thiabendazole) SB - IM MH - Capillary Electrochromatography/instrumentation/*methods MH - Chromatography, High Pressure Liquid/methods MH - Citrus/*chemistry MH - Food Contamination/analysis MH - Molecular Imprinting/*instrumentation MH - Reproducibility of Results MH - Thiabendazole/*analysis EDAT- 2007/12/25 09:00 MHDA- 2008/03/26 09:00 CRDT- 2007/12/25 09:00 PHST- 2007/09/14 00:00 [received] PHST- 2007/11/09 00:00 [revised] PHST- 2007/11/28 00:00 [accepted] PHST- 2007/12/25 09:00 [pubmed] PHST- 2008/03/26 09:00 [medline] PHST- 2007/12/25 09:00 [entrez] AID - S0021-9673(07)02101-2 [pii] AID - 10.1016/j.chroma.2007.11.097 [doi] PST - ppublish SO - J Chromatogr A. 2008 Feb 1;1179(2):216-23. doi: 10.1016/j.chroma.2007.11.097. Epub 2007 Dec 3.