THE DETERMINATION OF NIOBIUM IN NIOBIUM METAL, MIXED OXIDES OF NIOBIUM AND TANTALUM, POTASSIUM FLUONIOBATE AND NIOBIUM CHLORIDES

Technical Report · Tue Aug 31 04:00:00 EDT 1954

OSTI ID:4214402

The niobium is determined by a differential colorimetric technique in solutions containing a controlled fluoride content. The complexing agent is pyrogallol stabilized with sodiunn sulfite. The method may be applied to samples low in iron titanium, molybdenum, and tungsten (1% each) and free from polybasic organic acids such as oxalic and tartaric acids. The final sample used for the actual colorimetry should contain 500 to 800 mu g and the precision is expected to be of the order of plus or minus 1% (3 x standard deviation). (auth)

• Research Organization: United Kingdom Atomic Energy Authority. Industrial Group. Springfields Works, Springfields, Lancs, England
• NSA Number: NSA-13-018918
• OSTI ID: 4214402
• Report Number(s): SCS-M-269
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
COLOR
FLUORIDES
FLUORINE COMPOUNDS
IRON
METALS
MINERAL ACIDS
MOLYBDENUM
NIOBIUM
NIOBIUM COMPLEXES
NIOBIUM OXIDES
ORGANIC ACIDS
OXALIC ACID
PHENOLS
POTASSIUM COMPOUNDS
PYROGALLOL
QUANTITATIVE ANALYSIS
QUANTITY RATIO
SODIUM COMPOUNDS
SOLUTIONS
SULFUROUS ACID
TANTALUM OXIDES
TARTARIC ACID
TITANIUM
TUNGSTEN
USES