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Determination of multiple selenium stable isotope tracers by inductively coupled plasma mass spectrometry

✍ Scribed by Wayne T. Buckley; James J. Budac; David V. Godfrey; Karen M. Koenig

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
575 KB
Volume
21
Category
Article
ISSN
1076-5174

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✦ Synopsis

Inductively coupled plasma mass spectrometry with hydride generation was used for the determination of Se stable isotope tracer enrichment in standard solutions and biological materials. Up to three enriched isotopes, '%e, "Se and %e, were determined, while '%e served as the reference isotope. Tracer enrichment was linearly determined with or without simultaneous additions of two other Se stable isotope tracers. Multiple additions of enriched "Se and enriched ' %e at the low levels required for in vivo tracers were accurately determined in the presence of a much greater addition of enriched '%e (for isotope dilution analysis) in spite of the significant "Se and "Se impurities introduced with the enriched ''Se. Detection limits for Se stable isotope tracers were sufficient to determine up to a ZOO-fold dilution of tracer following an initial tracer enrichment equivalent to 10% of the mass of the natural Se pool.

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