Fast analysis of carbaryl by on-line SPE-SFC-DAD

Analysis of Carbaryl in water samples was performed by on- line Solid Phase Extraction Supercritical Fluid Chromatography Diode Array Detection (SPE-S FC-DAD). Parameters controlling the extraction and chromatographic separati on were studied and optimised. Comparison with off-line SPE procedure was a chieved. Degradation of Carbaryl in aqueous and methanolic solutions was al so considered. The detection limit of 5 ppb Carbaryl in water samples was a chieved, at 210 nm, with a good reproducibility, and the duration of one cy cle is about 35 minutes.