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Proceedings Paper

Selective ultra trace isotope determination in environmental and biomedical studies by high-resolution resonance ionization mass spectrometry
Author(s): Klaus Wendt; K. Blaum; Ch. Geppert; P. Mueller; N. Trautmann
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Paper Abstract

The precise determination of relative abundances of ultra trace isotopes in the range below 10-9 is of importance for a wide spectrum of applications in fields like environmental protection, cosmo-chemistry, bio-medical tracer studies or geological and geo-chronological investigations. The necessary high isotopic selectivity, rather complete isobaric suppression and good overall efficiency for these investigations is provided by high-resolution resonance ionization mass spectrometry. Multi-step continuous wave laser excitation and ionization using diode lasers at a compact quadrupole mass spectrometer has been optimized to become a powerful and reliable experimental method, which is just becoming competitive to accelerator mass spectrometry. With this technique we have performed measurements with high isotopic selectivity above 1010 on the isotopes 90Sr and 41Ca while further studies concern Gd and Pu isotopes. In all cases extensive atomic spectroscopic investigations were required as basis for analytical studies.

Paper Details

Date Published: 28 March 2002
PDF: 12 pages
Proc. SPIE 4634, Methods for Ultrasensitive Detection II, (28 March 2002); doi: 10.1117/12.463825
Show Author Affiliations
Klaus Wendt, Johannes Gutenberg-Univ. Mainz (Germany)
K. Blaum, Johannes Gutenberg-Univ. Mainz (Germany)
Ch. Geppert, Johannes Gutenberg-Univ. Mainz (Germany)
P. Mueller, Johannes Gutenberg-Univ. Mainz (Germany)
N. Trautmann, Johannes Gutenberg-Univ. Mainz (Germany)

Published in SPIE Proceedings Vol. 4634:
Methods for Ultrasensitive Detection II
Charles W. Wilkerson, Editor(s)

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