Secondary Ion Mass Spectrometer Analysis of Potash–Lime–Silica Glasses Leached in Hydrochloric and Sulfuric Acids

Secondary ion mass spectrometry investigations were performed on leached K₂ O–CaO–SiO₂ glass with a chemical composition similar to that of medieval stained glass. The results reveal that the type and concentration of the acid used definitely influence the kinetics of the leaching process. In addition to hydrogen, an enrichment of Cl and S was observed in the leached layers of glass treated with HCl and H₂ SO₄, respectively.