Fig. 5
Evolution of the leachate Li isotopic composition as a function of Li concentration change. Cross plot of the average Li isotopic composition of the leachates (δ7Li) measured using MC-ICP-MS for each triplicate (also given in Fig. 1b) against the total Li concentration in solution (also given in Fig. 1a). Errors are given to two s.d. on the isotopic data and one s.d. on the concentration data, as calculated from the triplicate aliquot measurements. The blue line with diamond markers and the orange line with square markers represent the two datasets of the duplicated experiments. The open diamond marker indicates the same experiment as the filled diamond markers in which the leachant was refreshed in one vessel after the 28-day aliquots were taken, before the glass was leached for further 70 days (98 days total dissolution). The central dashed black line indicates the pristine glass isotopic composition with the lines above and below this representing the two s.d. error on this measurement, as calculated from the triplicate MC-ICP-MS measurements of the four full-procedure alkali fusion replicates of the pristine glass.
