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Determination of Diphenylether Herbicides in Water Samples Using Dispersive Liquid-Liquid Microextraction Combined
Yung-Hao Liu1, Pai-Shan Chen2, Shang-Da Huang1
1National Tsing Hua University, Department of Chemistry, Hsinchu 30013, Taiwan.
Journal of AOAC International
|October 22, 2016
Summary
Two new methods, shaker-assisted dispersive liquid-liquid microextraction (SA-DLLME) and surfactant dispersive liquid-liquid microextraction (SDLLME), efficiently determine diphenylether herbicides in water using HPLC-PDA.
Area of Science:
- Analytical Chemistry
- Environmental Chemistry
Background:
- Diphenylether herbicides pose environmental risks.
- Accurate detection in water samples is crucial for monitoring.
Purpose of the Study:
- To develop and validate novel microextraction techniques for herbicide determination.
- To compare the efficacy of SA-DLLME and SDLLME for analyzing diphenylether herbicides.
Main Methods:
- Shaker-assisted dispersive liquid-liquid microextraction (SA-DLLME) using decyl acetate.
- Surfactant dispersive liquid-liquid microextraction (SDLLME) with Tween 60.
- High-performance liquid chromatography with photodiode array detection (HPLC-PDA) for quantification.
Main Results:
- Both methods achieved wide linear ranges (2-1000 μg L-1) and high coefficients of determination (>0.9992).
- SA-DLLME exhibited LODs from 0.62-1.74 μg L-1 and RR of 88-104%.
- SDLLME showed LODs from 0.72-1.38 μg L-1 and RR of 86-114% across various water types.
Conclusions:
- SA-DLLME and SDLLME are effective, rapid, and sensitive methods for diphenylether herbicide analysis in water.
- These techniques offer reliable quantification with minimal solvent consumption.
- The developed methods provide valuable tools for environmental water quality assessment.
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