Abstract

A method for the quantitative spectrographic analysis of the materials used in oxide coated thermionic cathodes for Fe, Cu, Pb, Mg, Mn, and Al is described. The materials consist of barium-strontium carbonate or barium-strontium-calcium carbonate. The basic raw materials consist of barium nitrate, strontium nitrate, and calcium nitrate. The method employs briquetted samples and a high voltage alternating current arc. Fifteen samples can each be analyzed for six elements in two hours with an elapsed time of eighty seconds per determination.

© 1948 Optical Society of America

The Quantitative Spectrochemical Determination of Barium, Strontium, and Calcium*

Werner Hartmann and Betty E. Prescott
J. Opt. Soc. Am. 38(6) 539-541 (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)

Wide Range Analysis for Zinc Using Spectrographic Line Widths

E. John Eastmond and Bernice E. Williams
J. Opt. Soc. Am. 38(9) 800-803 (1948)

An Investigation of the Use of Geiger-Müller Photoelectron Counters in the Spectrographic Analysis of Phosphorus in Steel

Richard Hanau and Ralph A. Wolfe
J. Opt. Soc. Am. 38(4) 377-383 (1948)

An Industrial Application of Geiger-Müller Counters to the Analysis of Phosphorus in Steels

Ford R. Bryan and George A. Nahstoll
J. Opt. Soc. Am. 38(6) 510-517 (1948)