Dispersive Liquid-Liquid Microextraction Based on Solidification of Floating Organic Drop Followed by Gas Chromatography-Electron Capture Detector for Determination of Some Pesticides in Water Samples

<table>The effect of extraction solvent (1-undecanol) volume on the preconcentration factor of analytes. Extraction conditions: water sample volume, 5.0 mL; disperser solvent (acetone) volume, 1.0 mL; extraction solvent (1-undecanol) volumes, 15.0, 20.0, 25.0, 30.0, 35, and 40 <i>μ</i>L; concentration of analytes, 100 <i>μ</i>g L<sup>−1</sup>.</table>

Chromatography Research International

fig3

Figure 3

Figure 3: Dispersive Liquid-Liquid Microextraction Based on Solidification of Floating Organic Drop Followed by Gas Chromatography-Electron Capture Detector for Determination of Some Pesticides in Water Samples 

Figure 3 | Dispersive Liquid-Liquid Microextraction Based on Solidification of Floating Organic Drop Followed by Gas Chromatography-Electron Capture Detector for Determination of Some Pesticides in Water Samples 