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The variation of sulfur isotope ratios in ultramarine blue may have some use in the identification of type and source of this important artists' pigment. The distinction between synthetic and natural material, and the distinction of different sources of the latter, can be helpful in
identifying forged paintings. The conversion of a 20-year-old mass spectrometer into a precision isotope ratio instrument and its use for the analysis of relatively small samples is described.
Carnegie-Mellon Institute of Research, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213
Publication date: September 1, 1976
More about this publication?
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)