Fig. 4
Static 6Li-1H CP-NMR spectra of a sample leached for 7 days at 90 °C (Red) and a sample leached for 112 days at 90 °C (Purple) in static batch dissolution experiments31 compared with the spectrum of the pristine glass (Cyan). The glass composition was the same as the glass used in the isotopic study but was not enriched in 6Li.31 Spectra were normalised to the mass of sample analysed and the number of repetitions.
