Synthesis of Macrocyclic Bis-Hydrazone and Their Use in Metal Cations Extraction
Figure 5
(a) Effect of pH on the extraction of Cu(II) and Cr(III). [Metal ions] = 1.5 × 10−3 M, [Ligand(I)] = 4 × 10−4 M in chloroform and dichloromethane. (▲) Chloroform(Cu) (◆) dichloromethane(Cu) (■) dichloromethane (Cr) (×) Chloroform (Cr). (b) Effect of pH on the extraction of Cu(II) and Cr(III). [Metal ions] = 1.5 × 10−3 M, [Extractant(II)] = 4 × 10−4 M in chloroform and dichloromethane. (▲) Chloroform(Cu) (×) dichloromethane(Cu) (■) Chloroform(Cr) (◆) dichloromethane(Cr).
