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Microchimica Acta

, Volume 129, Issue 3–4, pp 209–216 | Cite as

Isotope selective element analysis by diode laser atomic absorption spectrometry

  • H. D. Wizemann
  • K. Niemax
Original Papers

Abstract

The analytical figures of merit of isotope selective diode laser atomic absorption spectrometry (DLAAS) in low-pressure graphite furnaces are given for lithium and rubidium. While6Li and7Li were measured by Doppler-limited as well as by Doppler-free absorption spectroscopy of the 670.79 nm resonance line, Doppler-free saturation spectroscopy was applied for analysis of the85Rb and87Rb D2 resonance line at 780.03 nm. Three different modulation techniques were applied and compared: (i) intensity modulation, (ii) wavelength modulation, and (iii) a combination of intensity and wavelength modulation.

Key words

atomic absorption spectrometry diode laser spectrometry isotope analysis isotope dilution 

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Copyright information

© Springer-Verlag 1998

Authors and Affiliations

  • H. D. Wizemann
    • 1
  • K. Niemax
    • 2
  1. 1.Institute of PhysicsUniversity of HohenheimStuttgartFederal Republic of Germany
  2. 2.Institute of Spectrochemistry and Applied Spectroscopy (ISAS)DortmundFederal Republic of Germany

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