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Quantitative Trace Analysis of Metals by Field Desorption Mass Spectrometry

Authors

  • Dr. Wolf Dieter Lehmann,

    1. Institut für Physikalische Chemie der Universität, Wegelerstrasse 12, D-5300 Bonn (Germany)
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  • Dr. Hans-Rolf Schulten

    Corresponding author
    1. Institut für Physikalische Chemie der Universität, Wegelerstrasse 12, D-5300 Bonn (Germany)
    • Institut für Physikalische Chemie der Universität, Wegelerstrasse 12, D-5300 Bonn (Germany)
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  • Quantitative Field Desorption Mass Spectrometry, Part 7. This work was supported by the Deutsche Forschungsgemeinschaft, the Fonds der Chemischen Industrie, and the Ministerium für Wissenschaft und Forschung des Landes Nordrhein-Westfalen. We are indebted to Dr. D. Haaks, Gesamthochschule Wuppertal, for his help in the laser experiments, to Dr. H. M. Schiebel, Technische Universität Braunschweig, for his help in measurements with the multi-channel analyzer, and to Prof. Dr. H. J. Meyer, Universität Bonn, for a sample of 6Li-enriched lithium fluoride.—Part 6: W. D. Lehmann, H.-R. Schulten, H. M. Schiebel, Z. Anal. Chem., in press.

Abstract

The quantitative determination of 6Li and 7Li in Rhine water and determination of the isotopic distribution in some commercial Li salts have been performed by FD mass spectrometry in combination with a multi-channel analyzer. Surprisingly, the isotopic distribution in the Li salts deviates from the mean natural abundance. In contrast, the natural distribution is found in Rhine water. Using 6Li-enriched LiF as standard, 6Li and 7Li can be determined quantitatively by the method of isotopic dilution (total error 5%).

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