High precision measurements of 17O/16O and 18O/16O ratios in H2O.

  title={High precision measurements of 17O/16O and 18O/16O ratios in H2O.},
  author={Eugeni Barkan and Boaz Luz},
  journal={Rapid communications in mass spectrometry : RCM},
  volume={19 24},
We have optimized the method of water fluorination using the solid reagent CoF3 to produce O2. This allows isotope ratio measurements by dual-inlet mass spectrometry with very high precision of 0.01 to 0.03/1000 for both delta17O and delta18O. Using this method, delta17O and delta18O of atmospheric O2 were determined as 12.08 and 23.88/1000 vs. VSMOW, respectively. Likewise, delta17O and delta18O of GISP were -13.12 and -24.73/1000, and for SLAP they were -29.48 and -55.11/1000 vs. VSMOW… CONTINUE READING
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