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THE DETERMINATION OF IRON IN NIOBIUM-MOLYBDENUM ALLOYS

Technical Report ·
OSTI ID:4248786
A solution of niobium--molybdenum alloy is obtained by a potassium bisulfate fusion followed by an ammonium tartrate leach. The pH of the solution is adjusted, the iron reduced with hydroxylamine hydrochloride, and determined as its ferrous ortho phenanthroline complex absorptiometrically. The method is applicable to alloys containing up to 25% molybdenum. The iron content of the final solution should not exceed 500 mu g. The precision (30) is equivalent to plus or minus 4.5 mu g iron at the 100 mu e level,
Research Organization:
United Kingdom Atomic Energy Authority. Industrial Group. Springfields Works, Springfields, Lancs, England
NSA Number:
NSA-13-016792
OSTI ID:
4248786
Report Number(s):
SCS-M-412
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

ABSORPTION
ACIDITY
AMINES
AMMONIUM COMPOUNDS
CHEMISTRY
HYDROCHLORIC ACID
HYDROXIDES
HYDROXYLAMINE
IRON
IRON ALLOYS
IRON COMPOUNDS
ISOMERS
LEACHING
MEASURED VALUES
MELTING
MOLYBDENUM ALLOYS
NITROGEN COMPOUNDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHENANTHROLINE
PHENANTHROLINE-ORTHO
POTASSIUM SULFATES
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
REDUCTION
SOLUTIONS
TARTARIC ACID
USES