Fig. 9: The area of water related structure from FTIR spectra of ZNBS series glasses evolved with leaching time.
From: Influence of radiation on borosilicate glass leaching behaviors

The dot lines represent the linear region for irradiated sample and dashed lines for un-irradiated samples. The surface water intensity from FTIR increases linearly with the square root of time for un-irradiated samples. For irradiated sample, the surface water intensity shows similar trend at first few hours leaching and then changes to a saturated-like state for the following leaching.