FIELD: chromatographic fractionation of transplutonium and rare-earth elements. SUBSTANCE: method includes sorption on highly acid sulfacationite in hydrogen form; elution with solution of ammonium diethylenetriamino pentaacetate through layer of highly acid sulfacationite in form of ion of transition metal. Elution is carried out with solution of diethylenetriamino pentaacetate additionally containing nitrilotriacetate of alkali metal or ammonia. Used sulfacationite may be in form of ions of bivalent transition metals from group including Ni, Co, Cu, Zn, Cd, Pb, Fe. EFFECT: increased separation efficiency of promethium and samarium from yttrium with preserved separation efficiency of curium and americium from europium, accelerated process. 3 cl, 2 dwg
Authors
Dates
2003-09-10—Published
2001-07-06—Filed