Open Carbonate System
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Aqueous species
Inputs
Enter water composition. All ion concentrations are in µmol / kgwater;
alkalinity is in µeq / kgwater; air pCO₂ is in ppm. Set pCO₂ > 0
to equilibrate the solution against an open atmosphere of that partial pressure
(matches app.py's "TABLE" view).
Basic parameters
Cations (µmol / kgw)
Anions (µmol / kgw)
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Bulk results
Aqueous species
Saturation indices
Highlighted rows mean the solution is supersaturated (SI > 0 or IAP/Ksp > 1).
Saturation indices are only meaningful when the constituent elements are present
in solution; otherwise PHREEQC returns the sentinel −999.999.