Direct spectrographic determination of In, La, Nb, and Sr in thorium oxide

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Anal. Lett.; (United States)

DOI:https://doi.org/10.1080/00032717908082532· OSTI ID:6429332

Venkatasubramanian, R

A dc arc emission spectrographic method is described for the determination of ppM levels of In, La, Nb and Sr in thorium oxide. The method permits determination of the above low and high volatile impurity elements in thoria using AgCl as carrier in an atmosphere of oxygen. The carrier-distillation technique reported makes possible the following range of estimations: In:1--50 ppM; La, Nb:10--500 ppM and Sr:2--100 ppM. The method is simple and rapid and its precision ranges from 14% for In to 18% for Nb. Observations made on the choice of carrier and internal standard are presented.

• Research Organization: Bhabha Atomic Research Centre, Bombay, India
• OSTI ID: 6429332
• Journal Information: Anal. Lett.; (United States), Journal Name: Anal. Lett.; (United States) Vol. 12:A3; ISSN ANALB
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400104* -- Spectral Procedures-- (-1987)
ACCURACY
ACTINIDE COMPOUNDS
ALKALINE EARTH METALS
CHALCOGENIDES
CHEMICAL ANALYSIS
ELEMENTS
EMISSION SPECTROSCOPY
INDIUM
LANTHANUM
METALS
NIOBIUM
OXIDES
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
RARE EARTHS
REFRACTORY METALS
SPECTROSCOPY
STRONTIUM
THORIUM COMPOUNDS
THORIUM OXIDES
TRANSITION ELEMENTS