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Raman spectroscopic characterization on the OH stretching bands in NaCl-Na2CO3-Na2SO4-CO2-H2O systems: Implications for the measurement of chloride concentrations in fluid inclusions
Wang, Xiaolin1,2; Hu, Wenxuan1,2; Chou, I-Ming3
2013-09-01
Source PublicationJOURNAL OF GEOCHEMICAL EXPLORATION
Volume132Pages:111-119
AbstractRaman spectroscopy has been demonstrated to be an in situ and non-destructive method for the qualitative and quantitative analyses of fluid inclusions, especially for those fluid inclusions with high CO2 densities and/ or small size (i.e., <5 mu m). Here we addressed this issue by studying the Raman spectra of fluids of the NaCl-H2O, Na2SO4-H2O, Na2CO3-H2O, CO2-H2O, NaCl-Na2SO4-H2O and NaCl-Na2CO3-H2O systems. Their characteristics in fused silica capillary capsules (FSCCs) or a high-pressure optical cell (HPOC) were collected at similar to 22 degrees C The Raman OH stretching bands were fitted using two Gaussian sub-bands near 3220 cm(-1) and 3450 cm(-1). It is found that the peak height and width of the two Gaussian sub-bands can be used to construct the calibration curve for the calculation of chloride concentrations in aqueous NaCl solutions. Our results indicate that (1) this method can be applied to chloride-dominated fluids because the presence of other anions, such as CO32- and SO42-, will result in an overestimation of the calculated chloride concentrations; (2) the presence of CO2 does not have an obvious influence on the Raman OH stretching bands and, thus, this method can be applied to CO2-bearing fluid inclusions; and (3) each Raman spectroscopic system should be calibrated before the application, and reference standards can be easily prepared in fused silica capillary capsules. (C) 2013 Elsevier B.V. All rights reserved.
SubtypeArticle
KeywordRaman Spectroscopy Chloride Concentration Fluid Inclusions Co32- So42- And Co2 Effects
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.gexplo.2013.06.006
Indexed BySCI
Language英语
WOS KeywordAQUEOUS-SOLUTIONS ; LOW-TEMPERATURES ; OPTICAL-CELL ; WATER ; H2O ; SALINITY ; MIXTURES ; SPECTRA ; EQUILIBRIUM ; CARBONATE
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000323993700012
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/747
Collection深海科学研究部_深海极端环境模拟研究实验室
Affiliation1.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposit Res, Nanjing 210093, Jiangsu, Peoples R China
2.Nanjing Univ, Inst Energy Sci, Nanjing 210093, Jiangsu, Peoples R China
3.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Hainan, Peoples R China
Recommended Citation
GB/T 7714
Wang, Xiaolin,Hu, Wenxuan,Chou, I-Ming. Raman spectroscopic characterization on the OH stretching bands in NaCl-Na2CO3-Na2SO4-CO2-H2O systems: Implications for the measurement of chloride concentrations in fluid inclusions[J]. JOURNAL OF GEOCHEMICAL EXPLORATION,2013,132:111-119.
APA Wang, Xiaolin,Hu, Wenxuan,&Chou, I-Ming.(2013).Raman spectroscopic characterization on the OH stretching bands in NaCl-Na2CO3-Na2SO4-CO2-H2O systems: Implications for the measurement of chloride concentrations in fluid inclusions.JOURNAL OF GEOCHEMICAL EXPLORATION,132,111-119.
MLA Wang, Xiaolin,et al."Raman spectroscopic characterization on the OH stretching bands in NaCl-Na2CO3-Na2SO4-CO2-H2O systems: Implications for the measurement of chloride concentrations in fluid inclusions".JOURNAL OF GEOCHEMICAL EXPLORATION 132(2013):111-119.
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