Nu Instruments | Uranium Isotope Ratio Determination via UO₂ Mass Shifting
This application note demonstrates how the Sapphire Collision/Reaction Cell uses oxygen-based mass shifting to convert uranium into UO₂ species for highly accurate isotope ratio measurements. The technique supports excellent precision, stability and robustness across a range of uranium standards.
Accurate uranium isotope measurements are fundamental to geochronology, nuclear applications and geochemical investigations. Interfering species and complex matrices can present analytical challenges.
The Sapphire Collision/Reaction Cell uses oxygen gas to convert uranium ions into UO₂ species with greater than 99.9% efficiency. This mass shifting approach enables reliable isotope ratio determination while maintaining high sensitivity.
Testing with certified uranium reference materials demonstrated excellent agreement with certified values across different enrichment levels. The method also showed strong resistance to concentration mismatching and stable performance over extended measurement periods.
Key Takeaways:
- Greater than 99.9% UO₂ formation enables effective uranium mass shifting.
- Excellent accuracy is achieved across certified uranium standards.
- The method remains robust despite concentration mismatching between standards and samples.
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