THE SPECTROPHOTOMETRIC DETERMINATION OF URANIUM IN MIXTURES OF URANIUM AND TUNGSTEN

Technical Report · Thu Nov 01 04:00:00 EST 1962

OSTI ID:4748887

Hues, A D; Henicksman, A L

Uranium is determined in mixtures of U and W, using 3-(2- arsonophenylazo)-4,5-dihydroxy-2,7-naphthalenedisuifonic acid (arsenazo) as the chromogenic agent. The colored complex is developed by the addition of arsenazo to aliquots of the sample solution which have been treated with tartaric and boric acids and suitably buffered and is measured spectrophotometrically at 600 m mu . The selectivity of the method is improved by the use of EDTA as a masking agent. Forty-eight determinations of U in solutions containing known amounts of U and W to simulate alloys containing 20 to 65% of U gave an average recovery of 99.9% with a standard deviation of 0.36% for a single measurement. Most of the metals likely to be encountered as impurities can be tolerated in amounts up to 10% of the amount of uranium present. (auth)

• Research Organization: Los Alamos Scientific Lab., N. Mex.
• DOE Contract Number: W-7405-ENG-36
• NSA Number: NSA-17-015876
• OSTI ID: 4748887
• Report Number(s): LA-2844
• Country of Publication: United States
• Language: English

Related Subjects

ACIDITY
ARSENAZO
BORON OXIDES
CHEMISTRY
EDTA
EFFICIENCY
MASKING AGENTS
MIXING
ORGANIC ACIDS
PHOTOMETRY
QUANTITATIVE ANALYSIS
SPECTROSCOPY
SULFONIC ACIDS
TARTARIC ACID
TUNGSTEN
URANIUM
URANIUM COMPLEXES