Research Article

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 1

Effect of pH on the extraction recovery of copper. Extraction conditions: water sample volume, 5.0 mL; DPC, 2 × 10−3 mol L−1; extraction solvent (chloroform) volume, 60 μL; dispersive solvent (ethanol) volume, 0.5 mL; concentration of copper, 100 μg L−1.
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