Fig. 10

Effect of pH on the extraction efficiency of Cd(II), Zn(II), Cu(II), and Ni(II) in three solvent systems, (a) DCM, (b) A336, and (c) DCM/A336 synergistic system.

Effect of pH on the extraction efficiency of Cd(II), Zn(II), Cu(II), and Ni(II) in three solvent systems, (a) DCM, (b) A336, and (c) DCM/A336 synergistic system.