Quantification Of H20 Contents In Silicate Glasses Using Ir Spectroscopy - A Calibration Based On Hydrous Glasses Analyzed By Karl-Fischer Titration

Water-related IR absorption bands were investigated in hydrous soda-lime-silica glass (SLS) and float glass (FG). Glasses containing between 0.5 and 6 wt% H2O (corresponding to 0.7 & 0.8 mol/1) were synthesized in platinum capsules by re-melting glass powder to which water had been added. Synthesis were performed in an internally heated gas pressure vessel at temperatures of 1200 to 1250 deg C and pressures 100-500 MPa. The total water content of glasses was analysed by pyrolysis and subsequent Karl-Fischer titration.