208284.fig.005a
(a)
208284.fig.005b
(b)
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).