POLAROGRAPHIC DETERMINATION OF THE COMPOSITION OF TETRAVALENT CERIUM PYROPHOSPHATE COMPLEX

Journal Article · Thu Jan 01 04:00:00 EST 1959 · Izvest. Akad. Nauk Armyan. S.S.R., Ser. Khim. Nauk

OSTI ID:4087156

Tarayan, V M; Eliazyan, L A; Darbinyan, G A

The feasibility of applying the Jander and Spandau formula for determining the molecular weight of pyrophosphate complexes of trivalent manganese and tetravalent cerium was verified by polarographic determination of Mn(III) and Ce (IV) coefficients of diffusion in pyrophosphate solutions. The formula for the trivalent manganese complex is Mn(H/sub 2/P/sub 2/O/sub 7/)/sup 3- /, where p = 3, which is in good agreement with published data. The cerium pyrophosphate complexes at pH = 4.25 and 7.50 are described by the formulas STACe(H/sub 2/P/sub 2/O/sub 7/)!/sup 2-/ and STACe(HP/sub 2/O/sub 7/)!/sup 2-/, resp ectively. Polarographic determination of tetravalent cerium in 0.4 pyrophosphate at +0.1 to 0.00 intensity (in relation to saturated calomel electrode) was achieved on the basis of propertionality between diffusion current magnitude and the tetravalent cerium pyrophosphate concentrations. (R.V.J.)

• Research Organization: Inst. of Geology, Academy of Sciences, Armenian S.S.R.
• NSA Number: NSA-15-010870
• OSTI ID: 4087156
• Journal Information: Izvest. Akad. Nauk Armyan. S.S.R., Ser. Khim. Nauk, Journal Name: Izvest. Akad. Nauk Armyan. S.S.R., Ser. Khim. Nauk Vol. Vol: 12
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

CERIUM
CERIUM PHOSPHATES
CHEMISTRY
COMPLEXES
DIFFUSION
ELECTRODES
MANGANESE
MANGANESE COMPLEXES
MERCURY
MOLECULES
POLAROGRAPHY
QUANTITATIVE ANALYSIS
WEIGHT