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A re-evaluation of the effects of temperature and NaCl concentration on quantitative Raman spectroscopic measurements of dissolved CH4 in NaCl aqueous solutions: Application to fluid inclusion analysis
Ou, Wenjia1; Guo, Huirong2; Lu, Wanjun1,3; Wu, Xiangen1; Chou, I-Ming4
2015-12-06
Source PublicationCHEMICAL GEOLOGY
Volume417Pages:1-10
AbstractWe re-evaluated the effects of temperature and NaCl concentration on quantitative Raman spectroscopic measurements of dissolved CH4 in NaCl aqueous solutions with the newly developed Unsaturated Homogenized Solution Method (UHSM). The Raman peak area ratios (PARs) of the symmetric stretching vibrational mode of methane (at similar to 2917 cm(-1)) to the OH stretching band of water in homogeneous CH4-containing aqueous solutions were obtained at temperatures from 273.15 to 603.15 K, pressures from 10 to 120 MPa, and NaCl concentrations from 0 to 5 mol/kg H2O. The pressure and concentration of CH4 (mCH(4)) have little effect on the Quantitative Factor (QF = PAR/mCH(4)). However, the QF shows both temperature and NaCl concentration dependencies; QF increases linearly with temperature from 273 to 603 K at constant NaCl concentration, and the rate of increase of QF to temperature decreases with NaCl concentration. After normalization to QF at 298.15 K, the QF at elevated temperature (T, in K) and NaCl concentration (mNaCl, in mol/kg H2O) can be represented as a function of temperature and mNaCl:
SubtypeArticle
KeywordQuantitative Raman Spectroscopy Fluid Inclusion Temperature Pressure Nacl Concentration Ch4-nacl-h2o
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.chemgeo.2015.09.018
Indexed BySCI
Language英语
WOS KeywordIN-SITU ; HIGH-PRESSURE ; DIFFUSION-COEFFICIENTS ; WATER SOLUTIONS ; DEEP-OCEAN ; METHANE ; CALIBRATION ; SYSTEM ; PHASE ; PART
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000365098800001
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.idsse.ac.cn/handle/183446/892
Collection深海科学研究部_深海极端环境模拟研究实验室
Affiliation1.China Univ Geosci, Key Lab Tecton & Petr Resources, Minist Educ, Wuhan 430074, Peoples R China
2.China Univ Geosci, Sch Environm Studies, Wuhan 430074, Peoples R China
3.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Wuhan 430074, Peoples R China
4.Chinese Acad Sci, Sanya Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
Recommended Citation
GB/T 7714
Ou, Wenjia,Guo, Huirong,Lu, Wanjun,et al. A re-evaluation of the effects of temperature and NaCl concentration on quantitative Raman spectroscopic measurements of dissolved CH4 in NaCl aqueous solutions: Application to fluid inclusion analysis[J]. CHEMICAL GEOLOGY,2015,417:1-10.
APA Ou, Wenjia,Guo, Huirong,Lu, Wanjun,Wu, Xiangen,&Chou, I-Ming.(2015).A re-evaluation of the effects of temperature and NaCl concentration on quantitative Raman spectroscopic measurements of dissolved CH4 in NaCl aqueous solutions: Application to fluid inclusion analysis.CHEMICAL GEOLOGY,417,1-10.
MLA Ou, Wenjia,et al."A re-evaluation of the effects of temperature and NaCl concentration on quantitative Raman spectroscopic measurements of dissolved CH4 in NaCl aqueous solutions: Application to fluid inclusion analysis".CHEMICAL GEOLOGY 417(2015):1-10.
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2015-12-23 15:02