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

Abstract

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 µg L⁻¹. The relative standard deviations for the determination of the triazine herbicides at μg 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.

Keywords:

• High-performance liquid chromatography
• liquid-phase microextraction
• triazine herbicides
• water sample analysis

Acknowledgments

This work was supported by the Key Program of Science and Technology of Zhejiang Province (No. 2007C23071), the Analytical Testing Program of Science and Technology of Zhejiang Province (No. 2007F70011), and the Program of Science and Technology of Jiaxing City, Zhejiang Province (No. 2008AY2016).