Abstract

A method is described for the analysis of fused aluminum oxide and fused tin oxide crystals in which the treatment of the samples and standards removes the effects which sample form might have on spectral excitation. The crystal sample is ground and then dissolved in a molten sodium carbonate-tetraborate flux. The cooled cake is dissolved in dilute hydrochloric acid, and an internal standard is added. A drop of the solution is dried on the flat end of a graphite electrode, and the spectra are excited with an ac arc. The elements Cr, Co, Cu, Fe, Mn, Ni. and V have been determined with the lower limits ranging from 0.001 to 0.05%. The method is applicable to many other elements over wide concentration ranges because of the convenient method of standardization.

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 Spectrochemical Analysis of Copper Base Alloys*

Edwin K. Jaycox
J. Opt. Soc. Am. 35(2) 175-179 (1945)

Quantitative Spectrographic Analysis of Zirconium-Hafnium Mixtures*

Velmer A. Fassel and Charles H. Anderson
J. Opt. Soc. Am. 40(11) 742-747 (1950)

Modifications of Spectrographic Methods for Analysis of Aluminum and Its Alloys

R. W. Callon and J. E. Burgener
J. Opt. Soc. Am. 34(9) 543-549 (1944)

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)