Evaluation of a new generation quadrupole-based ICP-MS for uranium isotopic measurements in environmental samples
- First Online:
- 126 Downloads
We compare the analytical performance of a modern quadrupole-based ICP-MS (“X-Series”, Thermo-Electron, Winsford, UK) with a single-collector double-focusing sector-field ICP-MS (“Axiom”, VG Elemental, Winsford, UK) for uranium isotopic measurements in environmental samples. We focus on the precision and accuracy obtained with both instruments for the 235U/238U isotopic ratios and on the abundance sensitivity that is a key parameter for low 236U/238U isotopic ratios measurements. We observe that isotopic measurements are more precise accurate with the “X-Series” than with the “Axiom”. Besides, we demonstrate that the “Axiom’s” higher abundance sensitivity limits its capability to measure 236U/238U ratio below a few ppm.
Unable to display preview. Download preview PDF.
- 7.F. Pointurier, N. Baglan, P. Hemet, in: Plasma Source Mass Spectrometry: Current Trends and Future Developments, RSC Publishing, Cambridge, 2005, p. 130.Google Scholar
- 10.S. M. Nelms (Ed.), ICP Mass Spectrometry Handbook, Blackwell Publishing, Oxford, 2005, p. 166.Google Scholar