Investigation of the hydrolytic properties of tetravalent uranium. I. The state of microquantities of U(IV) in aqueous solutions. [Ions; colloids]

Journal Article · Wed Jan 01 04:00:00 EST 1975 · Sov. Radiochem. (Engl. Transl.); (United States)

OSTI ID:7185316

Davydov, Yu P; Efremenkov, V M

The region of existence of uranium(IV) in the ionic and colloidal states at concentrations of it in solution of 10/sup -6/ to 10/sup -7/ M was established by the methods of ultrafiltration, centrifugation, electromigration, and adsorption on glass. It was shown that in the interval of values pH 1.0 to 2.9, uranium(IV) exists in solution in the form of ions, while at values of pH greater than 3.0 it begins to manifest colloidal properties. The manifestation of colloidal properties by uranium(IV) in the interval of pH values 3.0 to 9.0 is associated with the adsorption of uranium on colloidal contaminations of the solution; with increasing pH greater than 9.0, true negatively charged colloids of uranium(IV) begin to be formed in solution.

• OSTI ID: 7185316
• Journal Information: Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 17:2; ISSN SVRDA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ADSORPTION
AQUEOUS SOLUTIONS
CATIONS
CENTRIFUGATION
CHARGED PARTICLES
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHEMICAL STATE
COLLOIDS
DECOMPOSITION
DISPERSIONS
ELECTROPHORESIS
HYDROLYSIS
IONS
LYSIS
MIXTURES
PH VALUE
SEPARATION PROCESSES
SOLUTIONS
SOLVOLYSIS
SORPTION
ULTRAFILTRATION
URANIUM COMPOUNDS