Detection of divalent europium, ytterbium, and samarium ions in aqueous solution during anodic polarization of the corresponding amalgam

Journal Article · Tue Apr 01 04:00:00 EST 1986 · Sov. Electrochem. (Engl. Transl.); (United States)

OSTI ID:5057590

Sagadieva, K Z; Badavamova, G L; Zebreva, A I

Amalgams of europium, ytterbium, and samarium are oxidized both at constant current and at constant potential. It was found experimentally that the potential of the indicator electrode moved to negative values when the circuit was closed and anodic current (1.0 to 60.0 mA) or potential (of the starting wave, half wave, or limiting current) applied. The potential of the microelectrode was 0.05 V, and remained unchanged during the entire electrolysis time, when pure mercury was used as the anode. The data reported for europium, ytterbium, and samarium amalgam confirm the results otained previously. By measuring the redox potentials of couples Sm/sup 3 +/-Sm/sup 2/, Yb/sup 3 +/-Yb/sup 2 +/ and Eu/sup 3 +/-Eu/sup 2 +/ directly at the electrode surface the authors have established the formation of divalent samarium, ytterbium, and europium ions during anodic oxidation of the corresponding amalgams.

• Research Organization: S.M. Kirov Kazakh State Univ., Alma-Ata
• OSTI ID: 5057590
• Journal Information: Sov. Electrochem. (Engl. Transl.); (United States), Journal Name: Sov. Electrochem. (Engl. Transl.); (United States) Vol. 21:10; ISSN SOECA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
ALLOYS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
ELECTROCHEMISTRY
ELECTROLYSIS
ELEMENTS
EUROPIUM
EUROPIUM COMPOUNDS
EUROPIUM OXIDES
KINETICS
LYSIS
MERCURY ALLOYS
METALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
RARE EARTHS
REACTION KINETICS
REDOX POTENTIAL
SAMARIUM
SAMARIUM COMPOUNDS
SAMARIUM OXIDES
VALENCE
YTTERBIUM
YTTERBIUM COMPOUNDS
YTTERBIUM OXIDES