SEPARATION AND GRAVIMETRIC DETERMINATION OF NIOBIUM, TANTALUM AND TITANIUM BY PRECIPITATION WITH N-BENZOYL-N-PHENYLHYDROXYLAMINE

Journal Article · Fri Apr 01 04:00:00 EST 1960 · Analytica Chimica Acta (Netherlands)

DOI:https://doi.org/10.1016/S0003-2670(00)88290-2· OSTI ID:4144429

Langmyhr, F J; Hongslo, T

A method is described for the separation and gravimetric determination of niobium. tantalum. and titanium by precipitation with N-benzoyl-N- phenylhydroxylamine. Titanium is kept in solution with ethylenediaminetetraacetic acid (disodium salt) and hydrogen peroxide and the earth acids are precipitated in IN sulfuric acid. Niobium and tantalum are separated and determined by a mcdiflcation of the method of Majumdar and Mukherjee. All three metals are finally precipitated with N-benzoyl-N- phenylhydroxylamine. In the analysis of complex materials niobium. tantalum. and titanium are separated from other constituents by a double precipitation with N- benzoyl-Nphenylhydroxylamine in the presence of EDTA and tartaric acid. (auth)

• Research Organization: Univ. of Oslo
• NSA Number: NSA-14-024081
• OSTI ID: 4144429
• Journal Information: Analytica Chimica Acta (Netherlands), Journal Name: Analytica Chimica Acta (Netherlands) Vol. Vol: 22; ISSN ACACA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMINES
CHEMICAL REACTIONS
CHEMISTRY
EDTA
HYDROGEN PEROXIDES
NIOBIUM
ORGANIC ACIDS
PRECIPITATION
QUALITATIVE ANALYSIS
QUANTITATIVE ANALYSIS
SEPARATION PROCESSES
SOLUTIONS
SULFURIC ACID
TANTALUM
TARTARIC ACID
TITANIUM
WEIGHT