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Updated: Jun 1, 2026

Sampling and Pretreatment of Tooth Enamel Carbonate for Stable Carbon and Oxygen Isotope Analysis
Published on: August 15, 2018
Conversion of O(2) into CO(2) for High-Precision Oxygen Isotope Measurements
1Institute of Earth Science, The Hebrew University of Jerusalem, Givat Ram, Jerusalem 91904, Israel.
Abstract:
An improved procedure of (18)O/(16)O ratio measurements by means of oxygen conversion to CO(2) is developed, which allows one to obtain the true δ(18)O values with a precision of ±0.05‰ in oxygen samples down to 7 μmol. The isotopic exchange between quartz glass and oxygen gas was measured in the temperature range of 600-900 °C, and it was found to be less than 0.2%.
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