Determination of 4-fluoroaniline and benzidine in water by solid-phase extraction and liquid-chromatography with fluorescence detection wavelength programming
A new method was developed for the determination of 4-fluoroaniline and benzidine in water by liquid-chromatography with fluorescence detection wavelength programming.Cleanert-PCX cation solid phase extraction column was used for the enrichment of 4-fluoroaniline and benzidine in water,then eluted with 5% ammonia-methanol.Water samples were analyzed by HPLC using water (containing 10 mmol/L ammonium acetate)/acetonitrile (80/20,V/V) as the mobile phase.The fluorescence detection wavelengths were set at λex/...