PODAND-MEDIATED TRANSPORT OF AG+ IN A BULK LIQUID MEMBRANE SYSTEM

The Podand I (Figure 1) has been studied as cation carrier in a bulk l iquid membrane system. Ag+ and some other transition metal ions (M(2+) =Cu, Ni, Co, Zn, and Cd) have been transported using the podand as car rier in a bulk liquid membrane system. Studies on the transport of equ imolar mixtures of two or three competing components have also been ca rried out with the same system. Ag+ exhibited a higher transport rate than the other M(2+) in the competitive experiments. Ligand structure and the equilibrium constant for complex formation are important param eters in the transport of the metal ions.