STUDIES ON ANALYTICAL METHODS FOR TRACE ELEMENTS IN METALS BY USING RADIOACTIVE ISOTOPE. III. DETERMINATION OF TANTALUM BY MEANS OF ISOTOPE DILUTION METHOD

Journal Article · Thu Oct 01 00:00:00 EDT 1959 · Sci. Repts. Research Insts., Tohoku Univ., Ser. A

OSTI ID:4078457

Amano, H

The determination of tantalum by the isotope dilution method in the presence of niobium was investigated by the use of the radioisotope Ta/sup 185/. Tantalum was separated from niobium as tantalum-tannin precipitate under the optimum conditions of a pH of 1.9 to 2.5 and a tantalum/niobium ratio of up to 1/ 50. If niobium was present in amounts 100 times or more that of tantalum, reprecipitation was needed. The reciprocal of the specific activity of tanthlum pentoxide precipitate was in a linear relation to the change in the amount of tantalum added. The recommended method gave an accurate result in the determination of tantalum in steal. (auth)

• Research Organization: Research Inst. for Iron, Steel and Other Metals, Japan
• NSA Number: NSA-15-012882
• OSTI ID: 4078457
• Journal Information: Sci. Repts. Research Insts., Tohoku Univ., Ser. A, Journal Name: Sci. Repts. Research Insts., Tohoku Univ., Ser. A Vol. Vol: 11
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
ISOTOPE DILUTION
ISOTOPES
NIOBIUM
PRECIPITATION
QUANTITATIVE ANALYSIS
RADIOACTIVITY
RADIOISOTOPES
SEPARATION PROCESSES
SOLUTIONS
STEELS
TANTALUM
TANTALUM 185
TRACE AMOUNTS
USES