Abstract

A carrier distillation technique is described for the analysis of trace impurities in niobium oxide. The carrier used is a 1: 1 mixture of AgCl and AgF. Separation of the carrier and sample charge along with the use of a boiler cap on the electrode cup greatly reduces the background and yet allows the impurities to be distilled into the arc within 90 sec. Sensitivity and precision data are included for 13 impurity elements.

A Method of Spectrographic Analysis of Impurities in Materials for Oxide Coating of Thermionic Cathodes*

T. J. Organ and S. L. Parsons
J. Opt. Soc. Am. 38(2) 191-195 (1948)

The Quantitative Spectrographic Analysis of the Rare Earth Elements*I. Determination of Samarium in NeodymiumII. Determination of Europium in Samarium

Velmer A. Fassel and Harley A. Wilhelm
J. Opt. Soc. Am. 38(6) 518-526 (1948)

The Spectrographic Determination of Small Amounts of Impurities in Magnesium Chloride*

Mabel F. Wilson
J. Opt. Soc. Am. 34(4) 229-233 (1944)

Quantitative determination of tantalum and niobium in tantalum–niobium ore using laser-induced breakdown spectroscopy

Li Liu and Zhongqi Hao
Appl. Opt. 58(2) 461-465 (2019)

The Quantitative Spectrographic Analysis of the Rare Earth Elements* III. Determination of Major Constituents in Complex Mixtures

Velmer A. Fassel
J. Opt. Soc. Am. 39(2) 187-193 (1949)