TY - JOUR
T1 - Temperature dependence of CO2 densimetry using micro-Raman Spectrometry at laboratory conditions
AU - Hagiwara, Yuuki
AU - Sogo, Yuya
AU - Takahata, Kohei
AU - Yamamoto, Junji
N1 - Funding Information:
This study was supported by Grants-in-Aid for Scientific Research (Nos. 23654160, 25287139, 26610136, and 16H04079) from the Japan Society for the Promotion of Science. We thank Yui Kouketsu and an anonymous reviewer for their constructive comments.
Funding Information:
Acknowledgments—This study was supported by Grants-in-Aid for Scientific Research (Nos. 23654160, 25287139, 26610136, and 16H04079) from the Japan Society for the Promotion of Science. We thank Yui Kouketsu and an anonymous reviewer for their constructive comments.
Publisher Copyright:
Copyright © 2018 by The Geochemical Society of Japan.
PY - 2018
Y1 - 2018
N2 - The CO2 densimetry based on CO2 Fermi diad (delta, cm–1) is a powerful method for estimating the depth of a rock’s origin. To enhance the accuracy of delta, we investigated both room and sample temperature dependency under laboratory conditions. We examined sample temperature dependence of delta while raising sample temperature using a heating-cooling stage at a constant room temperature. The results showed no sample temperature effect at least at temperatures of 21–26∞C. Similarly, in order to evaluate room temperature effect, we measured delta while raising room temperature by an air conditioner at constant sample temperature. Independent fluctuation of room and sample temperatures showed that changes in room temperature and the Raman system, not the influence of sample temperature, affect delta. In order to enhance the accuracy, we suggested a new correction formula for CO2 Fermi diad, which functions to correct for the influence of the temperature effects.
AB - The CO2 densimetry based on CO2 Fermi diad (delta, cm–1) is a powerful method for estimating the depth of a rock’s origin. To enhance the accuracy of delta, we investigated both room and sample temperature dependency under laboratory conditions. We examined sample temperature dependence of delta while raising sample temperature using a heating-cooling stage at a constant room temperature. The results showed no sample temperature effect at least at temperatures of 21–26∞C. Similarly, in order to evaluate room temperature effect, we measured delta while raising room temperature by an air conditioner at constant sample temperature. Independent fluctuation of room and sample temperatures showed that changes in room temperature and the Raman system, not the influence of sample temperature, affect delta. In order to enhance the accuracy, we suggested a new correction formula for CO2 Fermi diad, which functions to correct for the influence of the temperature effects.
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U2 - 10.2343/geochemj.2.0523
DO - 10.2343/geochemj.2.0523
M3 - Article
AN - SCOPUS:85051440048
VL - 52
SP - 379
EP - 383
JO - Geochemical Journal
JF - Geochemical Journal
SN - 0016-7002
IS - 4
ER -