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 6
Effect of the volume of dispersive solvent on the extraction recovery of copper. Extraction conditions: water sample volume, 5.0 mL; pH = 6; DPC concentration, 2 × 10−3 mol L−1; extraction solvent (chloroform) volume, 60 μL; dispersive solvent, ethanol; concentration of copper, 100 μg L−1.
