SELECTIVE TRANSPORT OF GOLD（Ⅱ） THROUGH THE LIQUID MEMBRANE CONTAINING POLYTHIOETHER OLIGOMER AS CARRIER

摘要

This paper deals with the transport properties of oligomer of polythioether PSA used as moble carrier in bulk liquid membrane for gold(Ⅲ).It was found that Au(Ⅲ) can be transported by PSA from source phase to receiving phase completely under appropriate conditions and only Au(Ⅲ) can be transferred through the liquid membrane to receiving phase from a mixture of Na(I)-Cu(Ⅱ）-Au(Ⅲ）-Fe(Ⅲ）-Pt(Ⅳ） in the following system:HAuCl4-HCl(aq.)/PSA-ClCH2-CH2Cl/(NH2)2CS-HCl(aq.).The transport rate of Au(Ⅲ） depended on the concentration of carrier,the thickness of liquid membrane,the concentration of Au(Ⅲ） in source phase and the acidity of the media.