Abstract
A new method was developed for the determination of monolinuron, propazine, linuron, and prebane in environmental water samples. The solvent (ionic liquid) impregnated resin (IL-SIR)-based extraction coupled with dynamic ultrasonic desorption (DUSD) was applied to the separation and concentration of the analytes. The high performance liquid chromatography (HPLC) was applied to the determination of the analytes. The ionic liquid [C6MIM][PF6] was immobilized on Diaion HP20 resin by immersing the resin in ethanol solution containing [C6MIM][PF6]. The effect of extraction parameters, including pH value of sample solution, salt concentration in sample and extraction time, and elution conditions, including the concentration of ethanol in elution solvent, the flow rate of elution solvent and the ultrasonic power, were examined and optimized. The limits of detection and quantification for the analytes were in the range of 0.15–0.29μgL−1 and 0.51–0.98μgL−1, respectively. Some environmental water samples were analyzed and the analytical results were satisfactory.
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