THE COLORIMETRIC DETERMINATION OF VANADIUM IN NIOBIUM-VANADIUM ALLOYS

Technical Report · Fri Jun 26 04:00:00 EDT 1959

OSTI ID:4208588

Articolo, O J

A procedure is described for the analysis of vanadium in niobium-- vanadium alloys in the range >0.1% vanadium with an accuracy of better than 3%. The method was applied to the analysis of niobium alloys in which the nominal per cent vanadium varied between 0.3 to 4.6%. The sample is dissolved in a mixture of nitric and hydrofluoric acid and then evaporated to fumes with sulfuric acid. The niobium is hydrolyzed with sulfurous acid and separated from the vanadium by filtration. Hydrogen peroxide is added to the filtrate to form a reddish brown complex with the vanadium. The optical density of the resulting solution is obtained at 450 m mu on a model B Beckman spectrophotometer. (auth)

• Research Organization: Knolls Atomic Power Lab., Schenectady, N.Y.
• DOE Contract Number: W-31-109-ENG-52
• NSA Number: NSA-13-019819
• OSTI ID: 4208588
• Report Number(s): KAPL-M-OJA-1
• Country of Publication: United States
• Language: English

Related Subjects

CHEMICAL REACTIONS
CHEMISTRY
COLOR
EVAPORATION
FILTERS
FREQUENCY
HYDROFLUORIC ACID
HYDROGEN PEROXIDES
HYDROLYSIS
LABORATORY EQUIPMENT
NIOBIUM ALLOYS
NITRIC ACID
PHOTOMETRY
QUANTITATIVE ANALYSIS
SEPARATION PROCESSES
SOLUTIONS
SPECTROMETERS
SULFURIC ACID
TRACE AMOUNTS
VANADIUM
VANADIUM ALLOYS
VANADIUM COMPLEXES