“…Aqueous solutions of all classes of surfactantsanionic (Oxyphos B [7], alkylsulfonates and alkyl sul fates [8,9]), cationic (Catamine AB [10], alkylpyri dinium chlorides [11]), and non ionogenic (Synta mides [12], Syntanols [13])-can produce two liquid phases under the action of inorganic salting out agents. These systems proved to be efficient in metal extraction.…”