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THE DETERMINATION OF NIOBIUM IN BISMUTH BASE ALLOYS

Technical Report ·
OSTI ID:4241273
The method is based on the reaction of niobium with thiocyanic acid in 4 M hydrochloric acid and 0.5 M tartaric acid medium, after the removal of bismuth as the bromide by volatilization. The complex is extracted with ether, and the solution is stabilized with acetone. Its absorption is measured at 385 m mu in a spectrophotometer. At a level of 4 ppm, the coefficient of variation is better than 3%. (auth)
Research Organization:
United Kingdom Atomic Energy Authority. Research Group. Chemistry Div., Woolwich Outstation, England
NSA Number:
NSA-13-016746
OSTI ID:
4241273
Report Number(s):
AERE-AM-28
Country of Publication:
United Kingdom
Language:
English

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Related Subjects

ACETONE
ACIDS
BISMUTH ALLOYS
BISMUTH BROMIDES
CHEMICAL REACTIONS
CHEMISTRY
COMPLEXES
CYANIDES
ETHERS
EVAPORATION
FREQUENCY
HYDROCHLORIC ACID
NIOBIUM
NITROGEN COMPOUNDS
ORGANIC ACIDS
ORGANIC SULFUR COMPOUNDS
PHOTOMETRY
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SPECTROSCOPY
STABILITY
SULFUR COMPOUNDS
TARTARIC ACID
THIOCYANIC ACID
THIOCYANIDES