Lanças, F. M.Rissato, S. R.Galhiane, M. S. [UNESP]2014-05-272014-05-271999-08-02Chromatographia, v. 50, n. 1-2, p. 35-40, 1999.0009-5893http://hdl.handle.net/11449/65817The determination of 2,4-D (2,4-dichlorophenoxyacetic acid) and Dicamba (2-methoxy-3,6-dichlorobenzoic acid) residues in sugar cane, rice and corn was performed by a supercritical fluid extraction (SFE) method using CO2/acetone as extraction mix and an SFE apparatus developed in our laboratory. The extracts were cleaned up after extraction by both liquid- liquid partition and a Florisil column. Micellar electrokinetic capillary chromatography (MEKC) coupled with ultraviolet on-column detection was used for the analysis of these pesticides. The detection limits were improved by the preparation of a special detection cell with an increased pathlength that gave detection limits of ca. 0.6 pg for 2,4-D and Dicamba. Our results demonstrated that capillary electrophoresis can be a powerful new analytical tool for pesticide residue analysis.35-40engDicamba and 2,4-DFood CropsMicellar Electrokinetic ChromatographySupercritical Fluid Extraction2,4 dichlorophenoxyacetic acidacetonecarbon dioxidedicambamagnesium trisilicatepesticidecapillary electrophoresiscorncropfoodmicellar electrokinetic chromatographynonhumanpriority journalricesupercritical fluid extractionArtigo10.1007/BF02493614Acesso restrito2-s2.0-0032864704