PERMANGANATOMETRIC METHOD FOR DETERMINING COLUMBIUM, WITH THE USE OF 8- HYDROXYQUINOLINE AS PRECIPITATING AGENT

Journal Article · Fri Jan 01 04:00:00 EST 1960 · Tr. Azerb. Sel'skokhoz. Inst.

OSTI ID:4714780

Mambetov, A A; Rzaeva, N A

Conditions for the precipitation of Nb in the form of hydroxyquinolate from solutions of the tartaric acid complex were established. The solutions were prepared from carbonate or pyrosulfate melts, as well as from a sulfuric acid niobium pentoxide solution. The reproducibility and duration of oxidation of hydroxyquinoline (I) with permanganate in sulfuric acid medium were examined, and the equivalent of (I) in the reaction was determined. Optimum conditions for the dissolution of niobium hydroxyquinolate in H/sub 2/SO/sub 4/ and for the titration of the solution with 0.02 N KMnO/sub 4/ solution were established. The permanganatometric method was found to be most convenient and most accurate for the determination of small amounts of Nb (5 to 50 mg) in a small volume of solution (25 to 30 ml). (Referativnyy zhurnal, Khimiya, No. 23, 1961).

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-021650
• OSTI ID: 4714780
• Journal Information: Tr. Azerb. Sel'skokhoz. Inst., Journal Name: Tr. Azerb. Sel'skokhoz. Inst. Vol. Vol: 11
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CARBONATES
CHEMISTRY
FUSED SALTS
MANGANESE OXIDES
NIOBIUM
NIOBIUM COMPLEXES
NIOBIUM OXIDES
ORGANIC ACIDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
PRECIPITATION
PREPARATION
QUANTITATIVE ANALYSIS
REACTION KINETICS
SOLUTIONS
SULFATES
SULFURIC ACID
TARTARIC ACID
TRACE AMOUNTS