POLAROGRAPHIC DETERMINATION OF HEXAVALENT URANIUM IN URANIUM TETRAFLUORIDE

Journal Article · Wed Jun 01 04:00:00 EDT 1960 · J. Atomic Energy Soc. Japan

DOI:https://doi.org/10.3327/jaesj.2.313· OSTI ID:4141544

Motojima, K; Okashita, H; Katsuyama, K

An analytical method is proposed for the polarographic determination of uranium(VI) in uranium tetrafluoride. A sample weighing about 500 mg is treated with 20 ml of 0.1M NaF solution using a magnetic stirrer, and is subjected to centrifugation. Two milliliters of the supernatant solution and 5 ml of supporting electrolyte solution (1.3 M HOAc + 0.7 M NH/sub 4/OAc + 0.2 M BeSO/sub 4/) are taken into a 10-ml volumetric flask and the resulting solution is diluted to the mark with water. Uranium(VI) in the solution is determined polarographically by referring to the standard calibration curve. For the purpose of suppressing the dissolution of uranium(IV) into the solution, NaF is used at the time of the sample digestion. The acetate buffer solution keeps the pH of the solution at 5 and Be/sup 2+/ ion removes the interference of F/sup -/ ion in the polarographic measurements. Al/sup 3+/ can be used instead of Be/sup 2+/ for the same purpose. By this method as small as 0.05% of uranium(VI) in uranium tetrafluoride can be readily determined. (auth)

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-018868
• OSTI ID: 4141544
• Journal Information: J. Atomic Energy Soc. Japan, Journal Name: J. Atomic Energy Soc. Japan Vol. Vol: 2
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

ACETIC ACID
ACIDITY
ALUMINUM COMPOUNDS
AMMONIUM COMPOUNDS
BERYLLIUM SULFATES
CENTRIFUGATION
CHEMISTRY
DIAGRAMS
ELECTRIC CHARGES
ELECTROLYTES
LABORATORY EQUIPMENT
MEASURED VALUES
POLAROGRAPHY
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SODIUM FLUORIDES
SOLUTIONS
URANIUM
URANIUM TETRAFLUORIDE
WATER