Development and validation of a high-performance liquid chromatographic procedure for the determination of herbicide residues in surface and agriculture waters

摘要

A procedure has been developed for the determination of quinclorac, bentazone, 2,4-D, clomazone, and propanil residues in surface and agriculture waters by SPE and HPLC-UV. The method was validated and was applied for levels between 0.1 and 0.5 g/L, after a 500-fold pre-concentration. Average recoveries ranged from 85.7 to 109.8% with overall relative standard deviations of 1.8 to 13.4%.