An integrated microchip for monitoring carbamate pesticides in environmental water using continuous flow chemical processes is under development, i.e., the integration of hydrolysis, azo-derivatization, liquid-liquid extraction, electrophoretic separation, and quantification. The separation of the derivatives of four carbamate pesticides (carbaryl, carbofuran, propoxur, and bendiocarb) extracted in the continuous flow of a 1-butanol phase was studied in a silica microchip using micellar EKC. A baseline separation of four pesticide derivatives was achieved on a silica chip using hydrodynamic injection with electroosmotic gating. Detection using a thermal lens microscope showed good linearity in the concentration range of 10-6-10-5 M with an LOD of 5 × 10-7 M, which is superior to that of conventional CE with UV absorption detection at a level of 10-4 M.
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