Fig. 5
From: Rhenium solubility and speciation in aqueous fluids at high temperature and pressure
Examples of Raman spectra of fluids in the 300–1200 cm−1 frequency range from systems that contain SiO2 in addition to ReO2. A Fluid spectra from the ReO2–SiO2–H2O. B Fluid spectra from the SiO2–H2O. C Fluid spectra from the Na2O–ReO2–SiO2–H2O. D Fluid spectra from the Na2O–SiO2–H2O. Raman intensities are normalized to the same Raman setup parameters (acquisition time and slit width)