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QUANTITATIVE SPECTROSCOPIC DETERMINATION OF NIOBIUM IN TITANIUM AND ZIRCONIUM MINERALS

Journal Article · · Trudy Inst. Mineral. Geokhim. i Kristallokhim. Redkikh Elementov Akad. Nauk SSSR
OSTI ID:4279083
The methods for the preparation of standards for the determination of Nb in eudialite, sphene, rincolite, astrophyllite, and lamprophyllite are described in detail. The conditions of the taking of an exposure are: Test sample l0 to l5 mg, upper electrode ground to a wedge-shaped point, a crater 5 mm deep and 3 mm in diameter drilled in the lower electrode, time of complete evaporation of specimen 4-5 min with a l0-amp current. Calibration curves were plotted according to 3-4 standard samples. The spectrophotometry was conducted according to the lines of Nb 2671.9 and 27l6.6 angstrom. The results of the determination of Nb in 20 specimens parallel with the determination of Nb in them by the chemical method are adduced. The average magnitude of deviation from the chemical analysis consisted of the J-57 engin l3% with an Nb content of 0.15 to 5.0%.
Research Organization:
Originating Research Org. not identified
NSA Number:
NSA-13-011221
OSTI ID:
4279083
Journal Information:
Trudy Inst. Mineral. Geokhim. i Kristallokhim. Redkikh Elementov Akad. Nauk SSSR, Journal Name: Trudy Inst. Mineral. Geokhim. i Kristallokhim. Redkikh Elementov Akad. Nauk SSSR Vol. Vol: No. 1
Country of Publication:
Country unknown/Code not available
Language:
English