METHOD FOR COEXTRACTING NEPTUNIUM AND PLUTONIUM

摘要

PURPOSE:To easily coextract neptunium and plutonium without generating secondary waste liquor. CONSTITUTION:A nitric acid mixed soln. of neptunium/plutonium is subjected to photooxidation by irradiation with UV. Since the valence of the neptunium is adjusted so that all of the neptunium is converted into water-soluble hexavalent neptunium and the valence of the plutonium is adjusted so that the plutonium is converted into tetra- or hexavalent plutonium extractable in an org. phase, these metals are easily coextracted.