A chloroform membrane system containing a given mixture of thioridazine.HCl and oleic acid was applied for the uphill transport of Pd2+ ions. In an HCl medium of pH 2 the ligand can form a stable complex with Pd(II) which is readily extractable in the membrane phase. In the presence of nitrite ion as a suitable stripping agent in the receiving phase, the amount of palladium transported across the liquid membrane after 120 minutes is 96.3 +/- 2.5%. The selectivity and efficiency of Pd2+ transport from aqueous solutions containing other cations such as K+, Mg2+, Ca2+, Sr2+, Ba2+, Co2+, Ni2+, Cu2+, Zn2+, Pb2+, Cd2+, Fe3+, Cr3+, and Al3+ ions were investigated. It was found that none of these cations interfere with palladium transport, even at a Mn+/Pd2+ molar ratio of >100.