Eh-pH diagram for As

[Johnson@YSY]

Hello editor
I want to creqte a Eh-pH diagram for As,but I am a beginner,additon:pE-pH diagram for the As-H20 system at 25 °C. Total dissolved As species set at 50 ppb. I would be very grateful if I could help
                                                                                              A postgraduate from:Guizhou University

[dlparkhurst]

The program PhreePlot (https://phreeplot.org/) is designed to make those kinds of diagrams.There are many example files, one of which may be very similar to what you are interested in plotting.

[Johnson@YSY]

but I think its code is not very clear,e Can you pleas give me an example？

[dlparkhurst]

Here is the result of the file As.ppi in the directory phreeplot->demo->Assolution of the PhreePlot distribution. If you run this example the ps file attached is named As_As1.ps.