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- Title
Temperature and salinity effects on the Raman scattering cross section of the water OH-stretching vibration band in NaCl aqueous solutions from 0 to 300 °C.
- Authors
Wu, Xiangen; Lu, Wanjun; Ou, Wenjia; Caumon, Marie‐Camille; Dubessy, Jean
- Abstract
Water is often used as an internal standard in quantitative Raman spectroscopic measurements of dissolved species in aqueous solutions containing salts at varying temperatures. However, the effects of temperature and dissolved ions on the relative differential Raman scattering cross section (RSCS) of the OH-stretching vibration band of water at elevated temperatures and salinities are not well defined quantitatively. In this study, the Raman spectra of NaCl solutions with different salinity (from 0 to 5 mol NaCl/kg · H2O) at 20 °C at atmospheric pressure and from 0 to 300 °C at 30 MPa were studied. The relative RSCS of the OH-stretching vibration band of liquid water (σ( mNaCl, T, 30 MPa)/σ( Pure water, 20 °C, 30 MPa)) as a function of temperature ( T, in °C) and salinity ( mNaCl, in mol/kg · H2O) was established:
- Subjects
RAMAN spectroscopy; RAMAN scattering; EFFECT of temperature on Raman effect; SALINITY; SALT
- Publication
Journal of Raman Spectroscopy, 2017, Vol 48, Issue 2, p314
- ISSN
0377-0486
- Publication type
Article
- DOI
10.1002/jrs.5039