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Raman spectroscopic study of CO2-NaCl-H2O mixtures in synthetic fluid inclusions at high temperatures1 <FN ID="FN1"><NO>1</NO>Associate editor: C. Romano</FN>

Authors :
Chen, Jinyang
Zheng, Haifei
Xiao, Wansheng
Zeng, Yishan
Weng, Kenan
Source :
Geochimica et Cosmochimica Acta. Mar2004, Vol. 68 Issue 6, p1355. 6p.
Publication Year :
2004

Abstract

Mixtures of CO2-NaCl-H2O contained in synthetic fluid inclusions are studied by laser Raman spectroscopy at high temperatures. With increasing temperature, the band splitting (X) of υ1-2υ2 diad of spectrum of CO2 presents more variations, and the intensity ratios of the hot bands to the υ1-2υ2 diad increase. For mixtures of gas phase rich in CO2 and liquid phase rich in H2O before homogenization, the strength of hydrogen bonding of water in the liquid phase decreases almost linearly with increasing temperature. When mixtures become homogeneous liquid phases, carbon dioxide content increases significantly as a result of the abrupt decrease in hydrogen bonds. Our results show that the hydrogen bonds change only slightly at higher temperatures above the homogeneous point, and a certain extent of the hydrogen bonds still remains at the highest temperature of 550&#176;C of this work. The study is helpful to Raman spectroscopic analysis of natural fluid inclusions at high temperatures. [Copyright &amp;y&amp; Elsevier]

Details

Language :
English
ISSN :
00167037
Volume :
68
Issue :
6
Database :
Academic Search Index
Journal :
Geochimica et Cosmochimica Acta
Publication Type :
Academic Journal
Accession number :
12433210
Full Text :
https://doi.org/10.1016/j.gca.2003.09.016