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Re: question: PHREEQC - pressure




There's not really a good way to account for pressure in PHREEQC. The
effect is relatively small, on the order of .1 log units in K. You can find
the partial molal volumes and correct the log K of calcite, but to do it
right, you would have to correct all the K's for all the aqueous species.
Probably all you can do is adjust the calcite K and throw a little
uncertainty into your interpretation.

David


David Parkhurst (dlpark@xxxxxxxx)
U.S. Geological Survey
Box 25046, MS 413
Denver Federal Center
Denver, CO 80225




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