High precision measurements of 17O/16O and 18O/16O ratios in H2O
Top Cited Papers
- 24 November 2005
- journal article
- research article
- Published by Wiley in Rapid Communications in Mass Spectrometry
- Vol. 19 (24) , 3737-3742
- https://doi.org/10.1002/rcm.2250
Abstract
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‰ for both δ17O and δ18O. Using this method, δ17O and δ18O of atmospheric O2 were determined as 12.08 and 23.88‰ vs. VSMOW, respectively. Likewise, δ17O and δ18O of GISP were −13.12 and −24.73‰, and for SLAP they were −29.48 and −55.11‰ vs. VSMOW, respectively. Analysis of these data in a ln(δ17O + 1) vs. ln(δ18O + 1) plot yields a line with a regression coefficient (λ) of 0.5279 ± 0.0001 (R2 = 0.999999). We also determined the fractionation factors 17α and 18α in liquid‐vapor equilibrium, and found that the ratio ln17α/ln18α is constant (0.529 ± 0.001) over the temperature range 11.4 to 41.5°C. Copyright © 2005 John Wiley & Sons, Ltd.Keywords
This publication has 23 references indexed in Scilit:
- Kinetic 17O effects in the hydrologic cycle: Indirect evidence and implicationsGeochimica et Cosmochimica Acta, 2004
- High‐precision measurements of 17O/16O and 18O/16O of O2 and O2/Ar ratio in airRapid Communications in Mass Spectrometry, 2003
- A new method to determine the 17O isotopic abundance in CO2 using oxygen isotope exchange with a solid oxideRapid Communications in Mass Spectrometry, 2001
- Assessment of Oceanic Productivity with the Triple-Isotope Composition of Dissolved OxygenScience, 2000
- Triple-isotope composition of atmospheric oxygen as a tracer of biosphere productivityNature, 1999
- The Use of Electrolysis for Accurate δ17O and δ18O Isotope Measurements in WaterIsotopes in Environmental and Health Studies, 1998
- A rapid method for the preparation of O2 from CO2 for mass spectrometric measurement of17O/16O ratiosRapid Communications in Mass Spectrometry, 1998
- Determination of δ17O values of reference water samples VSMOW and SLAPChemical Geology, 1997
- Oxygen isotope fractionation between CO2 and water, and the isotopic composition of marine atmospheric CO2Earth and Planetary Science Letters, 1968
- A method for oxygen isotope analysis of milligram quantities of water and some of its applicationsJournal of Geophysical Research, 1966