Shaofeng
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Posts posted by Shaofeng
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By the way I used system in the attachement to construct the diagram. But I got a diagram as shown in the attachment. I think this diagram is not correct because scorodite is unstable under neutral to alkaline conditions.
Please see the attachements.
Shaofeng
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Hi Brian,
I am new for GWB9. I am trying to construct pH-Eh diagram for arsenic, sulfur and Fe in a system containing 0.01333mM As, 3mM Fe and 3mM S. But in GWB, it requires activity rather than concentrations of each element. So, how can I get the correct activity in this system. Use some software to calculate them? I will greatly appreciate to your help if you can show me step by step.
Regards,
Shaofeng
react calculation
in The Geochemist's Workbench
Posted
Hi,
I wang to calculate the dominant species in As-Fe-S-H2O system using react program. However, after I input the parameters and press the run botton, the program reminds of me with " -- Error: System needs to contain: O2(aq)". I don't know the activity of O2 in the system. How should I do.
Please see the attchment for my input.
regards,
shaofeng
As-Fe-S.rea