Dear Dr Parkhurst,
Just a quick question to check if I can use Si data instead of SiO2 (in ppm) in the PHREEQC input file.
The following Solution 1 has 5.25 mgL-1 of Si. Is the input file correct or do I need to convert the Si to SiO2?
Alkalinity 136.0000 as HCO3
S(6) 68.6000 as SO4
N(5) 0.0000 as NO3
N(+3) 0.0000 as NO2
Amm 0.0000 as NH4
Thanks a lot for your kind help.
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