2
PRIVILEGED DOCUMENT FOR REVIEW PURPOSES ONLY Electronic Supplementary Information (ESI): Fig. S1 and Table S1 ‐1.00 ‐0.80 ‐0.60 ‐0.40 ‐0.20 0.00 0.20 0.40 0.60 0.80 1.00 Na/Li= 0.5 Na/Li= 1 Na/Li= 5 Na/Li= 10 Mg/Li= 0.5 Mg/Li= 1 Mg/Li= 5 Mg/Li= 10 Al/Li= 0.5 Al/Li= 1 Al/Li= 5 Al/Li= 10 Fig. S1 (a) The matrix effects of elements. L‐SVEC standard solution doped with Na (diamonds), Mg (squares) and Al (triangles) are compared with pure L‐SVEC solution. The result indicates that the influence of matrix effect for a wide range of element/Li ratio using the analytical method presented here is negligible. (b) Intensity‐dependent instrumental shift of measured Li isotope ratios using an APEX‐IR desolvating system for sample introduction. 2.5‐20 ng ml ‐1 L‐SVEC solutions were bracketed with 5 ng ml ‐1 solution using the on‐peak blank correction. The mean value of δ 7 Li and the error bars (2SD) were also shown. Symbols represent mean values of at least five duplicates. -1.00 -0.80 -0.60 -0.40 -0.20 0.00 0.20 0.40 0.60 0.80 1.00 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 Towards machine background Calibrator: L‐SVEC (5 ng ml ‐1 ) Intensity ratio of sample/calibrator Δ‰ to bracketing calibrator (b) δ 7 Li (‰,L‐SVEC) (a)
