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  • Title: Application of micellar electrokinetic capillary chromatography to the analysis of uncharged pesticides of environmental impact.
    Author: Segura Carretero A, Cruces-Blanco C, Cortacero Ramírez S, Carrasco Pancorbo A, Fernández Gutiérrez A.
    Journal: J Agric Food Chem; 2004 Sep 22; 52(19):5791-5. PubMed ID: 15366822.
    Abstract:
    A test mixture of five pesticides and metabolites (naphthalene acetamide, carbaryl, 1-naphthol, thiabendazole, and carbendazime) has been investigated by capillary electrophoresis with an ultraviolet diode array detector. These compounds were separated in <10 min by micellar electrokinetic capillary chromatography (MEKC). MEKC was performed in 30 mM ammonium chloride/ammonia buffer (pH 9.0) containing 15 mM sodium dodecyl sulfate. The lowest detection limit was obtained for the insecticide carbaryl (0.22 microg mL(-)(1)) and the highest for its metabolite 1-naphthol (1.13 microg mL(-)(1)). This method was applied to the analysis of the pesticides in cultivated vegetables such as cucumbers, which were extracted with a liquid-liquid extraction procedure, obtaining recovery percentages ranging from 90.1 to 110.2%.
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