Determination of Triazine Herbicides in Aqueous Samples Using Solidification of a Floating Drop for Liquid-Phase Microextraction with Liquid Chromatography

A rapid, simple, and efficient liquid-phase microextraction (LPME) method coupled with high-performance liquid chromatography and ultraviolet detection for the analysis of triazine herbicides was developed in this study. Under the optimum conditions, the enrichment factors and extraction recoveries were 33.0-72.6 and 11.2-23.2%, respectively. The detection limits (LODs) were in the range of 0.03-0.10 mu g L-1. The relative standard deviations for the determination of the triazine herbicides at g L-1 levels varied in the range 2.05-8.15%. The method was successfully applied in the determination of the triazine herbicides in aqueous samples with satisfactory results.