POLAROGRAPHIC DETERMINATION OF HEXAVALENT URANIUM IN URANIUM DIOXIDE. USE OF THE STRONG PHOSPHORIC ACID FOR THE DISSOLUTION OF SAMPLE

Journal Article · Fri Jan 01 04:00:00 EST 1960 · J. Atomic Energy Soc. Japan

DOI:https://doi.org/10.3327/jaesj.2.1· OSTI ID:4174657

Motojima, K; Hoshino, A

An analytical method for the polarographic determination of uranium(VI) in uranium dioxide samples is proposed. The sample is dissolved in strong phosphoric acid by heating at 200 deg C. After cooling, the solution is diluted with water and subjected to polarography. The maximum wave of uranium(VI) is suppressed by the presence of uranium(IV) but does not interfere with the determination. The wave height of uranium(VI) is affected by the concentration of the strong phosphoric acid, dissolved oxygen, and temperature. Precipitation of uranium(IV) phosphate depends on the concentration of the strong phosphoric acid in final solution. By this method, 0.025% of uranium(VI) in uranium dioxide can be determined. (auth)

• Research Organization: Japan Atomic Energy Research Inst., Tokyo
• Sponsoring Organization: USDOE
• NSA Number: NSA-14-009501
• OSTI ID: 4174657
• 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

CHEMISTRY
COOLING
HEATING
OXYGEN
PHOSPHORIC ACID
POLAROGRAPHY
PRECIPITATION
QUANTITATIVE ANALYSIS
SOLUTIONS
URANIUM
URANIUM DIOXIDE
URANIUM PHOSPHATES
USES
WATER