INTERNAL STANDARD TECHNIQUE FOR PRECISE ISOTOPIC ABUNDANCE MEASUREMENTS IN THERMAL IONIZATION MASS SPECTROMETRY

Journal Article · Tue May 01 04:00:00 EDT 1962 · Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed.

OSTI ID:4792286

Dietz, L A; Pachucki, C F; Land, G A

An internal standard technique which gives more than a 5-fold improvement in the precision of an isotopic analysis made in a thermal ionization mass spectrometer is described. The technique developed has application in the following fields: certain half life determinations; geochemical age determinations; nuclear absorption cross sections and low isotopic burnup; and isotopic dilution analysis for the assay of uranium. To apply the technique, three or more isotopes of an element must be present so that two different isotopic ratios of the same element can be compared in such a manner as to eliminate almost completely mass discrimination (instrument bias). The flexibility of the internal standard technique to problems which are amenable to surface ionization mass spectrometry is clarified is discussions given on its application to uranium isotope abundance measurements and to a new determination of the half life of Cs/sup 137/. (P.C.H.)

• Research Organization: General Electric Co., Schenectady, N.Y.
• NSA Number: NSA-16-016317
• OSTI ID: 4792286
• Journal Information: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed., Journal Name: Analytical Chemistry (U.S.) Formerly Ind. Eng. Chem., Anal. Ed. Vol. Vol: 34; ISSN ANCHA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ABSORPTION
AGE ESTIMATION
BURNUP
CESIUM 137
CHEMISTRY
CROSS SECTIONS
EFFICIENCY
HALF-LIFE
IONIZATION
ISOTOPE DILUTION
ISOTOPES
MASS SPECTROMETERS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
SOLUTIONS
STANDARDS
URANIUM ISOTOPES