Titrimetric determination of niobium in a mixture with molybdenum

Journal Article · Thu Dec 10 04:00:00 EST 1987 · J. Anal. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:7160430

Vinarova, L I; Stoyanova, I V; Ivanova, E S

The authors proposed a titrimetric method for determination of niobium based on the conversion of niobium to a peroxy complex, its decomposition by Mohr's salt, and titration of excess iron(II) by cerium(IV) salts in the presence of a ferroin indicator. The method was used to determine niobium in technical materials and in samples with a high tantalum content. Titanium and molybdenum interfere in the cerimetric determination of niobium. The purpose of this paper is the creation of a simple and reliable titrimetric method for determination of niobium in the presence of predominant amounts of molybdenum.

• Research Organization: Physicochemical Institute, Odessa (USSR)
• OSTI ID: 7160430
• Journal Information: J. Anal. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Anal. Chem. USSR (Engl. Transl.); (United States) Vol. 42:6; ISSN JACUA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102* -- Chemical & Spectral Procedures
AROMATICS
AZAARENES
CERIUM COMPOUNDS
CHEMICAL REACTIONS
COMPLEXES
COMPLEXOMETRY
DECOMPOSITION
ELEMENTS
FERROIN
HETEROCYCLIC COMPOUNDS
INDICATORS
INTERFERING ELEMENTS
IRON COMPOUNDS
METALS
MOLYBDENUM
NIOBIUM
NIOBIUM COMPLEXES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
PHENANTHROLINES
RARE EARTH COMPOUNDS
REAGENTS
SALTS
SENSITIVITY
TANTALUM
TITANIUM
TITRATION
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
VALENCE