USE OF CAPILLARY ELECTROPHORESIS FOR DETECTION OF METSULFURON AND CHLORSULFURON IN TAP WATER

The present paper describes chlorsulfuron and metsulfuron determination in tap water by capillary electrophoresis (CE). A method for metsulfouron and chlorsulfuron concentration by solid-phase extraction is also presented. Metsulfuron and chlorsulfuron were detected by capillary electrophoresis quantitatively to 0.1 ppb and to 0.01 ppb qualitatively. Particular attention was devoted to instrumental reproducibility of the method and to problems linked to matrix interferences during extraction phases from tap water. Finally, correlation studies between bioassay and CE analysis were effected to confirm the validity of the solid-phase extraction procedure.