1987•Sov. Radiochem. (Engl. Transl.); (United States)Requires access

Extraction of americium in different oxidation states in a two-phase aqueous system based on poly(ethylene glycol)

N. P. Molochnikova, B.F. Frenkel, B. F. Myasoedov, В. М. Шкинев, B. Ya. Spivakov, Yu. A. Zolotov

Abstract

The extraction of americium in different states of oxidation was studied in a two-phase aqueous system based on poly(ethylene glycol). Conditions were found for the quantitative extraction of americium (III) and americium (V) from solutions of ammonium sulfate in the pH range of 3-5 and in the presence of arsenazo III. The composition of the complexes of americium with the reagent was determined; americium (III) reacts with arsenazo III in solutions of ammonium sulfate to form complexes with the composition of MeR and Me/sub 2/R. Characteristics of the absorption spectra of complexes of americium (III) and (V) with arsenazo III in ammonium sulfate solutions and in extracts based on aqueous solutions of poly(ethylene glycol) were found. The molar extinction coefficients of complexes of americium with arsenazo III were determined in these solutions.

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Key concepts: Americium, Chemistry, Aqueous solution, Reagent, Ethylene glycol, Extraction (chemistry), Aqueous two-phase system, Inorganic chemistry