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The use of direct reading emission spectrographs is a well known means of analyzing used crankcase oils for trace metals. The analysis can be accomplished without any sample preparation by employing a rotating graphite disc as one of the electrodes. A graphite rod is used as the counterelectrode.
The disc, as it rotates, is partially immersed in the sample, and thus a fresh supply of oil is continuously presented to the discharge gap.
Texaco, Inc., Richmond, Virginia 23234
Publication date: November 1, 1973
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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)