Abstract

A total-burn spectrographic method has been applied to the determination of trace concentrations of silicon in plutonium. The sample is oxidized to plutonium dioxide, mixed with a germanium dioxide–graphite mixture containing tin internal standard, packed into cupped graphite electrodes, and burned to completion in a high-amperage dc arc. Plutonium spectral interference is avoided by using the less sensitive Si 2506.90-Å line. The lower limit of the determination is 25 ppm of silicon in plutonium. The precision of the method is estimated to be ±8% (coefficient of variation) at the 270-ppm level and ±14% at 40 ppm.

Spectrographic Determination of Trace Elements in 70/30 Brass and Admiralty Brass. Part I*

P. A. Leichtle
J. Opt. Soc. Am. 34(8) 454-463 (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)

Spectrographic Procedure for Analysis of Powdered Samples of Unknown Origin

H. E. Biber and S. Levy
J. Opt. Soc. Am. 47(5) 381-385 (1957)

The Effect of Alkali and Alkaline Earth Salts on the Spectrographic Determination of Strontium*

E. Fast and J. Rud Nielsen
J. Opt. Soc. Am. 37(8) 614-622 (1947)

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)