Some New Upper Limits of Isotopic Abundance By Mass Spectrometry

Author: Leipziger, F. D.

Source: Applied Spectroscopy, Volume 17, Issue 6, Pages 149-170 (November 1963) , pp. 158-160(3)

Publisher: Society for Applied Spectroscopy

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Abstract:

Using a spark source mass spectrograph, a search has been made for undiscovered naturally occurring isotopes of low abundance. None was found, although the spark source instrument permitted examination of elements that have not been analyzed in this context for many years. The ability of the instrument to ionize all elements and the ease with which the rarer isotopes may be seen allowed upper limits of <0 000001 atom % to be placed on some isotopes. Be, P, Mn, Co, As, Rh, Au, and Bi were confirmed as monoisotopic.

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/000370263789620908

Affiliations: Sperry Rand Research Center, Sudbury, Massachusetts

Publication date: November 1, 1963

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