A new, simple analytical radiochemical method for the determination of americium tracer involves the silver catalyzed peroxydisulfate oxidation of trivalent americium to the sexivalent state.Fluoride stabilizes the americyl ion during a series of lanthanum fluoride scavenges. Excellent separation of americium tracer is effected from curium, berkelium, californium, plutonium, uranium, thorium, lanthanide elements, cesium, strontium, zirconium, niobium, ruthenium, iron, and aluminum.Several useful analytical and process applications of this efficient purification method are discussed. The purification and analytical radiochemical determination of americium are of paramount importance