[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Databases PhreeqC




The llnl.dat database released with PHREEQC and PhreeqcI contains the
elements Cr, Mo, and V. This database is essentially the same as the
databases used by EQ3/6 and Geochemist's Workbench. I have little
experience in modeling these trace metals, so I do not have an
understanding of the goodness of the thermodynamic data for these elements.
However, the llnl.dat database could serve as a starting point for your
investigations.

The minteq.dat database has Cr and V, which you could check for consistency
with llnl.dat.

I suspect sorption (SURFACE definitions in PHREEQC) will be important for
these trace metals, so you may have to develop a surface complexation model
for the elements as well.

David

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




Project Home Page
Complete Water Resources Division Software
USGS Home Page
Water Resources Division Home Page
NRP Home Page
Help Page
USGS Privacy Statement       

Please note that some U.S. Geological Survey (USGS) information accessed through this page may be preliminary in nature and presented prior to final review and approval by the Director of the USGS. This information is provided with the understanding that it is not guaranteed to be correct or complete and conclusions drawn from such information are the sole responsibility of the user.

Any use of trade, product, or firm names in this publication is for descriptive purposes only and does not imply endorsement by the U.S. Government. 


The URL of this page is: https://wwwbrr.cr.usgs.gov/projects/GWC_coupled/phreeqc/mail/msg00441.html
Email:dlpark@usgs.gov
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 4416 since Jan 22, 1998.