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RAPID TWO-CYCLE EXTRACTION METHOD FOR NEPTUNIUM. INITIAL SEPARATION AS NEPTUNIUM(VI) WITH METHYL ISOBUTYL KETONE

Technical Report ·
OSTI ID:4197328

A method is described for the separation and determination of neptunium in urarnium--fission product -mixtures. A two-cycle extraction system is used. Neptunium is oxidized to +6 with permangarate and quantitatively extracted as a nitrate complex into methyl isobutyl ketone from an acid deficient aluminum nitrate salting solution containing tetrapropyl ammonium nitrate. Neptunium is stripped from the ketone phase and simultaneously reduced to +4 by contact with ferrous chloride-hydroxylamine solution, then quantitutively extracted into thenoyltrifluoroacetone-xylene. The extraction of uranium and plutonium is less than 0.1% and 0.01%, respectively. Rutherium and zircorium, the only 80day cooled fission products which follow the neptunium, are decontaminated to greater than 1 x 10/sup 4/. (auth)

Research Organization:
Phillips Petroleum Co. Atomic Energy Div., Idaho Falls, Idaho
DOE Contract Number:
AT(10-1)-205
NSA Number:
NSA-14-007446
OSTI ID:
4197328
Report Number(s):
IDO-14482
Country of Publication:
United States
Language:
English