Abstract

Optical emission spectrographic procedures are described for the estimation of some 60 elements in graphite. Using sodium fluoride as a carrier, the dc arc is employed for a direct examination of powdered graphite, while the copper spark method is used for analysis of the residue after ashing the sample.

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J. Opt. Soc. Am. 31(12) 730-738 (1941)

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

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J. Opt. Soc. Am. 38(6) 539-541 (1948)

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

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J. Opt. Soc. Am. 34(8) 454-463 (1944)

Spectrochemical Analysis of Ceramics and Other Non-Metallic Materials*

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Spectrochemical Analysis by the Copper Spark Method*

Mark Fred, Norman H. Nachtrieb, and Frank S. Tomkins
J. Opt. Soc. Am. 37(4) 279-287 (1947)