Standard method for colorimetric determination of uranium in aqueous solutions

Journal Article · Wed Jan 01 04:00:00 EST 1975 · Annu. Book ASTM Stand.; (United States)

OSTI ID:7193474

A colorimetric method is described for the determination of U in aqueous solutions arising from the processing of irradiated nuclear fuels and from other sources of irradiated U. For best precision, the method is applicable to 50-75 ..mu..g/ml of U, but quantities from 30-750 ..mu..g/ml can be determined. The concentration of U is determined by measuring the absorbance of the U-dibenzoylmethane complex at 415 nm in a hexane solution. To prevent interference from other ions, the U is all oxidized to U(VI) prior to extraction, and the organic extract is scrubbed with acid deficient solutions of Al(NO/sub 3/)/sub 3/ containing titrate, oxalate, EDTA, and ferrous sulfamate. The estimated precision of the single laboratory determinations is 1.7 percent. (BLM)

• OSTI ID: 7193474
• Journal Information: Annu. Book ASTM Stand.; (United States), Journal Name: Annu. Book ASTM Stand.; (United States) Vol. 45; ISSN ASTSA
• Country of Publication: United States
• Language: English

Related Subjects

050800 -- Nuclear Fuels-- Spent Fuels Reprocessing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ABSORPTION SPECTROSCOPY
ACTINIDES
AQUEOUS SOLUTIONS
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FUELS
INTERFERING ELEMENTS
METALS
MIXTURES
NUCLEAR FUELS
REACTOR MATERIALS
REPROCESSING
SENSITIVITY
SEPARATION PROCESSES
SOLUTIONS
SPECTROSCOPY
SPENT FUELS
URANIUM