DETERMINATION OF URANIUM(VI) IN UO$sub 2$ BY THE CONSTANT CURRENT COULOMETRY

Journal Article · Sun Sep 01 04:00:00 EDT 1963 · Bunseki Kagaku (Japan)

DOI:https://doi.org/10.2116/bunsekikagaku.12.840· OSTI ID:4138467

Takeuchi, T; Yoshimori, T

An accurate and simple method is described for the determination of U(VI) in uranium dioxide. The method is based on constant current coulometry using the titanium sulfate electrolyte proposed by Kennedy and Lingane. The sample (0.1 to 0.5 g) was dissolved readily in a mixture of 2N sulfuric acid and 1 to 2 drops of hydrofluoric acid, which was preferable to strong phosphoric acid. An aliquot of the solution was added to 55 to 40 ml of the electrolyte consisting of 7 to 8 M sulfuric acid, 0.6 to 0.8 M titanium sulfate, 10 mg of ferrous ion, 50 to l00 mg of uranium(IV) ion, and a few drops of hydroliuoric acid. Uranium(VI) was determined coulometrically using a sensitive amperometric end point procedure. Satisfactory results were obtained for 13 to 1240 mu g of uranium(VI) when the indicator circuit potential was chosen at 0.14to 0.16 v vs S.C.E. Resulis of stoichiometric analysis of uranium oxides (UO/sub 2/ and U/sub 3/O/sub 8/) are tabulated. (auth)

• Research Organization: Nagoya Univ., Japan
• Sponsoring Organization: USDOE
• NSA Number: NSA-18-003690
• OSTI ID: 4138467
• Journal Information: Bunseki Kagaku (Japan), Journal Name: Bunseki Kagaku (Japan) Vol. Vol: 12; ISSN BNSKA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

AMPEROMETRY
CHEMISTRY
COULOMETRY
ELECTROLYTES
ELECTROLYTIC CELLS
HYDROFLUORIC ACID
PHOSPHORIC ACID
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SOLUTIONS
SULFURIC ACID
TABLES
TITANIUM SULFATES
U3O8
URANIUM COMPOUNDS
URANIUM DIOXIDE