High‐precision measurements of 17O/16O and 18O/16O of O2 and O2/Ar ratio in air
- 20 November 2003
- journal article
- research article
- Published by Wiley in Rapid Communications in Mass Spectrometry
- Vol. 17 (24), 2809-2814
- https://doi.org/10.1002/rcm.1267
Abstract
A method for high‐precision and high‐accuracy mass spectometric measurements of the ratios among the three oxygen isotopes, and of the O2/Ar ratio, is presented. It involves separation of the O2‐Ar mixture from air and includes a fully automated system that ensures highly reliable sample processing. Repeated measurements of atmospheric oxygen yield the repeatability (±SE × t, standard error of the mean (n = 12) multiplied by Student's t‐factor for a 95% confidence limit) of 0.004, 0.003 and 0.2‰ for δ18O, δ17O and δO2/Ar, respectively. Copyright © 2003 John Wiley & Sons, Ltd.This publication has 20 references indexed in Scilit:
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