Abstract
Isotopic analysis of the water used in KRISS triple point of water (TPW) cells was performed by three separate laboratories. The δD and δ 18O isotopic composition of six ampoules, made from two TPW cells, were analyzed by isotope ratio mass spectrometers. The analysis data showed that δD and δ 18O were − 62.17‰ and − 9.41‰ for the KRISS-2002-Jan cell, and − 36.42‰ and − 4.08‰ for the KRISS-2005-Jun cell. The temperature deviation of the triple point of water for these cells calculated from Kiyosawa’s data and the definition of the TPW were + 45.07μK for the KRISS-2002-Jan cell, and + 25.49μK for the KRISS-2005-Jun cell. The KRISS TPW temperature was + 92μK higher than the CCT-K7 KCRV after correcting for the deviation of the isotopic composition from Vienna Standard Mean Ocean Water.
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Acknowledgment
One of the authors gratefully acknowledges the technical assistance of Mr. C.H. Song of the Temperature/Optics Group at KRISS, during the fabrication of the TPW cells and the water ampoules.
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Open Access This is an open access article distributed under the terms of the Creative Commons Attribution Noncommercial License (https://creativecommons.org/licenses/by-nc/2.0), which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
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Gam, K.S., Kang, K.H., Kim, YG. et al. Isotopic Composition of Water Used in Triple-Point Cells. Int J Thermophys 29, 808–814 (2008). https://doi.org/10.1007/s10765-008-0414-0
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DOI: https://doi.org/10.1007/s10765-008-0414-0