POLAROMETRIC TITRATION OF THORIUM IN MONAZITE

Journal Article · Sat Dec 31 23:00:00 EST 1960 · Sci. Sinica (Peking)

OSTI ID:4840923

Tung, S; Wang, E

After a thorough investigation of the properties of the elements in monazite and the characteristics of polarometric titration, decomposition and polarometric titration steps were combined. A dried sample is fused with potassium hydrogen bifluoride; by selecting a mixture of aluminium chloride, acetic acid, and sodium acetate as the supporting electrolyte, thorium can be rapidly and accurately determined by polarometric titration using ammonium molybdate as reagent. The optimum conditions are as follows: applied voltage -- 0.75 v, composition of supporting electrolyte: 1.5 N AlCl/sub 3/, 7% CH/sub 3/ COOH, and CH/sub 3/COONa (pH = 1.7). The precision of the determination lies within 2%. It takes three hours to carry through the determination. (auth)

• Research Organization: Inst. of Applied Chemistry, Academia Sinica, Peking
• NSA Number: NSA-15-029153
• OSTI ID: 4840923
• Journal Information: Sci. Sinica (Peking), Journal Name: Sci. Sinica (Peking) Vol. Vol: 19
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ACETATES
ACETIC ACID
ALUMINUM CHLORIDES
AMMONIUM COMPOUNDS
CHEMISTRY
DECOMPOSITION
ELECTROLYTES
FLUORIDES
HYDROGEN COMPOUNDS
MOLYBDENUM COMPOUNDS
MONAZITES
POTASSIUM COMPOUNDS
QUALITATIVE ANALYSIS
SODIUM COMPOUNDS
THORIUM