Published June 1988
| Version v1
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Precision determination of uranium in uranium oxide by constant-current coulometry
- 1. Ministry of Nuclear Industry, Beijing, BJ (China). Research Inst. of Uranium Ore Processing
Description
A method of constant-current coulometric titration for determination of uranium in uranium oxide is described. The method involves using Cr(II) as reductant to reduce U(VI) to U(IV) in H2SO4-H3PO4 medium, oxidizing the excess Cr(II) in air, adding the amount of solid K2Cr2O7 slightly larger than that required for quantitative oxidation of U(IV) and titrating the excess K2Cr2O7 with the electrogenerated Fe(II). The endpoint is determined amperometrically and the reduction-oxidation process was determined. The precision of the method indicated by the standard deviation of an individual observation is better than 0.01% for 1 g uranium oxide
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Additional details
Publishing Information
- Imprint Pagination
- 6 p.
- Report number
- CNIC--00226
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 21052157
- Subject category
- S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- ACCURACY; INTERFERING ELEMENTS; OXIDATION; REDUCTION; URANIUM; URANIUM OXIDES U3O8; VOLTAMETRY
- Descriptors DEC
- ACTINIDE COMPOUNDS; ACTINIDES; CHALCOGENIDES; CHEMICAL REACTIONS; ELEMENTS; METALS; OXIDES; OXYGEN COMPOUNDS; URANIUM COMPOUNDS; URANIUM OXIDES
Optional Information
- Secondary number(s)
- BRIUOP--0010.