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

Journal of Chemistry

fig2

Figure 2

Figure 2: 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 2 | Preconcentration of Copper Using 1,5-Diphenyl Carbazide as the Complexing Agent via Dispersive Liquid-Liquid Microextraction and Determination by Flame Atomic Absorption Spectrometry 