DETECTION OF POLAR PESTICIDES IN NATURAL WATERS USING MICELLAR ELECTROKINETIC CHROMATOGRAPHY AFTER MICROEXTRACTION
A micellar electrokinetic chromatography method was developed to detect 27 polar pesticides in natural waters. The optimal dispersive liquid-liquid microextraction conditions were chosen for different class pesticides collected together (phenoxycarboxylic acids, sym-triazine, neonicotinoids, organophosphoric compounds, carbamates, urea derivatives, triazinone, triasol, imidazole and benzimidazole). Limit of pesticide detection in the water, taking into account their concentration, ranged between 1 and 22 μg/l. Relative standard deviation of the test results was not higher than 0,1.