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Raman spectroscopy as a tool to study the solubility of CO (sub 2) in magnesium sulphate brines; application to the fluids of Europa's cryomagmatic reservoirs

Laura J. Bonales, Victoria Munoz-Iglesias and Olga Prieto-Ballesteros
Raman spectroscopy as a tool to study the solubility of CO (sub 2) in magnesium sulphate brines; application to the fluids of Europa's cryomagmatic reservoirs (in Geo-Raman X, Jean Dubessy (editor))
European Journal of Mineralogy (December 2013) 25 (5): 735-743

Abstract

The solubility of CO (sub 2) in water at different temperature and pressure conditions has been studied for more than 150 years because of the common presence of this system in the Earth, and its importance for engineering and in several biological and geological processes. However, there are many contradictions in the literature with regard to the solubility of CO (sub 2) in salt-rich aqueous solutions, and associated effects such as the salting out have been studied in detail for only few salts such as NaCl or Na (sub 2) SO (sub 4) . In this study we introduce Raman spectroscopy as a useful tool to measure gas solubility in brines. We have obtained the solubility of CO (sub 2) in aqueous solution of MgSO (sub 4) at different concentrations (5 and 17 wt %), in the range of temperatures from 5 to 20 degrees C and pressures up to 50 bar. The results allow one to approach different aqueous reactions and processes that are relevant in geochemical phenomena of some planetary objects. Thus, we have modelled the degassing processes that could occur through the crust of Europa, a satellite of Jupiter.


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 25
Serial Issue: 5
Title: Raman spectroscopy as a tool to study the solubility of CO (sub 2) in magnesium sulphate brines; application to the fluids of Europa's cryomagmatic reservoirs
Title: Geo-Raman X
Affiliation: Universidad Complutense, Departamento de Quimica Fisica I, Madrid, Spain
Affiliation: Universite de Lorraine, Nancy, France
Pages: 735-743
Published: 201312
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Germany
Meeting name: 10th Geo-Raman meeting
Meeting location: Nancy, FRA, France
Meeting date: 20120611June 11-13, 2012
References: 32
Accession Number: 2014-004513
Categories: Extraterrestrial geology
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables
Secondary Affiliation: Centro de Astrobiologica, ESP, Spain
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201404
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