CARRIER-MEDIATED TRANSPORT OF PLATINUM(IV) THROUGH A SUPPORTED LIQUIDMEMBRANE IMPREGNATING AN 8-QUINOLINOL DERIVATIVE

The transport behavior of Pt(IV) has been studied through a supported liquid membrane (SLM) containing a long-chain 8-quinolinol, LIX 26, as a mobile carrier. Platinum(IV) was extracted with LIX 26 from an HCl solution via an anion exchange reaction and stripped from the loaded o rganic phase by a weakly acidic solution (pH > 1). Platinum (IV) was n early quantitatively transported across an SLM impregnating 15% (v/v) LIX 26 and 10% (v/v) 1-octanol in kerosene from a feed solution of 1-2 M HCl into a weakly acidic product solution. The transport rate of Pt (IV) was related to the distribution ratio on the feed side. Platinum( IV) was efficiently enriched in the product solution with high recover y.