Anion exchange x-ray-fluorescence determination of uranium in plutonium
An improved method is described for the determiation of uranium in plutonium metal and plutonium compounds using x-ray fluorescence following two anion-exchange separations. Uranium (as the chloride complex) is first separated from most of the 500-mg plutonium sample using anion-exchange resin in glass columns with 8M HCl and ascorbic acid. The eluate solution from this separation contains uranium as (UO/sub 2/Cl/sub 3/)/sup -/, Pu/sup +3/, and a small amount of Pu/sup +4/. This solution is dried and redissolved in 8M HCl and ascorbic acid to reduce the Pu/sup +4/ to Pu/sup +3/; it is then pipetted onto filter paper impregnated with anion-exchange resin. The plutonium is washed from the resin filter paper with 8M HCl, leaving uranium adsorbed on the paper. The L/sub ..cap alpha..1/ x-ray line for the uranium is measured and compared to standards. The precision is 4% relative standard deviation for the concentration range from 5 to 200 ..mu..g uranium. The minimum detection limit is 1 ..mu..g uranium.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6435359
- Report Number(s):
- LA-9552; ON: DE83008363
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400103* -- Radiometric & Radiochemical Procedures-- (-1987)
400105 -- Separation Procedures
ACCURACY
ACTINIDE COMPOUNDS
ACTINIDES
CHEMICAL ANALYSIS
ELEMENTS
ION EXCHANGE
METALS
NONDESTRUCTIVE ANALYSIS
PLUTONIUM
PLUTONIUM COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
SENSITIVITY
TRANSURANIUM COMPOUNDS
TRANSURANIUM ELEMENTS
URANIUM
X-RAY EMISSION ANALYSIS
X-RAY FLUORESCENCE ANALYSIS