Preliminary investigation of an uncertainty budget for uranium isotope ratio analysis using a liquid sampling—atmospheric pressure glow discharge—orbitrap mass spectrometer system

The liquid sampling-atmospheric pressure glow discharge (LS-APGD) ionization source has proven to be an effective analysis tool for making uranium isotope ratio measurements when coupled to high-resolution mass spectrometers, such as the Orbitrap. While previous studies have shown the capabilities o...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2023-07, Vol.332 (7), p.2875-2886
Main Authors: Goodwin, Joseph V., Manard, Benjamin T., Ticknor, Brian W., Rogers, Kayron T., Hexel, Cole R., Cable-Dunlap, Paula, Marcus, R. Kenneth
Format: Article
Language:English
Subjects:
Atmospheric pressure
Budgets
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Glow discharges
GUM
Hadrons
Heavy Ions
Inorganic Chemistry
Investigations
Isotope ratios
Mass spectrometers
Mass spectrometry
Nuclear Chemistry
Nuclear energy
Nuclear Physics
nuclear safeguards
Physical Chemistry
RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
Sampling
Uncertainty
uncertainty evaluation
Uranium
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Summary:The liquid sampling-atmospheric pressure glow discharge (LS-APGD) ionization source has proven to be an effective analysis tool for making uranium isotope ratio measurements when coupled to high-resolution mass spectrometers, such as the Orbitrap. While previous studies have shown the capabilities of the LS-APGD for isotope ratio determination, a systematic evaluation of the measurement uncertainty of the technique has not been conducted. To this end, the International Standards Organizations (ISO) guidelines to the expression of uncertainty in measurement (GUM analysis) have been applied to generate an uncertainty budget. Presented here, a preliminary assessment derived from the GUM analysis was performed. The uncertainty in the instrument blank determination has been identified as a primary factor contributing to measurement uncertainty for the LS-APGD-Orbitrap method. These findings for the specific test case of uranium isotopic analysis will be invaluable in applications across the breadth of isotope ratio mass spectrometry performed on this unique instrumental platform. Graphical abstract
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-023-08901-9