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Re: database

Dear Dr. David Parkhurst

Thank you for your comments!

I checked the logK data for SO2(g), and as you pointed out, this data is wrong.
logK of SO2(g) was derived from NEA data. The result of recalculation is -5.3196.... -> -5.32.
This value is same as your database. I will revise this data.

We(JNC) appreciate your comments.
JNC database homepage has not been mature yet, but we try to make the good site which gives you useful information for geochemical modelling


YOSHIDA, Yasushi

At 09:26 03/08/20 -0600, you wrote:

Thanks for the notice of your database. I downloaded the .gz version for
PHREEQC and was able to use it. However, I think it was an ascii file and
not in .gz format.

I ran a test problem with all the elements just to see how things looked. I
made the same run with llnl.dat (distributed with PHREEQC) and enclose both
for your information. Not surprisingly, the distribution of species is
quite different. Some differences may bear looking into.

The log K for SO2(G) appears to be in error in your database. I suspect a
sign error in the derivation of the log K.

Thanks again for the information.


(See attached file: all_jnc.out.jnc)(See attached file: all_jnc.out.llnl)

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

Project web page: https://wwwbrr.cr.usgs.gov/projects/GWC_coupled

--------------------------------------------------------- YOSHIDA, Yasushi

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