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A quantitative spectrographic method has been developed for the determination of the following alloying constituents in gold within the concentration range 0.1 to 2.0%: Al, Sb, As, B, Ga, Ge, In, and Sn. The method utilizes a rotating-disc solution technique with internal standard control
and ac spark excitation. The minimum sample requirement for a single exposure is 2.5 mg of gold alloy in a 0.25 ml solution volume. Extension of the method to include higher or lower concentration levels or other elements of interest is feasible in most cases. The accuracy of the method ranges
from 5.8 to 10.7% at the 95% confidence level.
Semiconductor and Materials Division, Radio Corporation of America, Somerville, New Jersey
Publication date: April 1, 1962
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The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge. Previously published as Bulletin (Society for Applied Spectroscopy)