Preconcentration of Copper Using 1,5-Diphenyl Carbazide as the Complexing Agent via Dispersive Liquid-Liquid Microextraction and Determination by Flame Atomic Absorption Spectrometry

<table>Effect of type of the extraction solvent on the extraction recovery of copper. Extraction conditions: water sample volume, 5.0 mL; pH = 6; DPC concentration, 2 × 10<sup>−3 </sup>mol L<sup>−1</sup>; dispersive solvent (ethanol) volume, 0.5 mL; extraction solvent volume, 60 <i>μ</i>L; concentration of copper, 100 <i>μ</i>g L<sup>−1</sup>.</table>

Journal of Chemistry

fig3

Figure 3

Figure 3: Preconcentration of Copper Using 1,5-Diphenyl Carbazide as the Complexing Agent via Dispersive Liquid-Liquid Microextraction and Determination by Flame Atomic Absorption Spectrometry 

Figure 3 | Preconcentration of Copper Using 1,5-Diphenyl Carbazide as the Complexing Agent via Dispersive Liquid-Liquid Microextraction and Determination by Flame Atomic Absorption Spectrometry 