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U.S. Department of Energy
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EXTRACTION, SPECTROPHOTOMETRIC METHOD SPECIFIC FOR MICROGRAM AMOUNTS OF URANIUM

Technical Report ·
OSTI ID:4312118
An extraction, spectrophotometric method has been developed specific for the determination of microgram quantities of uranium in the presence of large concentrations of diverse ions. Tetrapropylammoniam uranyl trinitrate is extracted into methylisobutyl ketone from an acid deficient aluuninum nitrate salting solution, followed by a single citric, tartaric, ethylenediaminetetraacetic acid scrub. Color development is made in situ by the addition of dibenzoylmethane in an ethanol-pyridiae mixture. The molar absorptivity at 415 m mu is 16,500. The coefficient of variation is 0.71% at the 25- mu g level. The lower limit of detection is 0.5 mu g. (auth)
Research Organization:
Phillips Petroleum Co. Atomic Energy Div., Idaho Falls, Idaho
DOE Contract Number:
AT(10-1)-205
NSA Number:
NSA-12-013742
OSTI ID:
4312118
Report Number(s):
IDO-14437
Country of Publication:
United States
Language:
English