> The problem is that in the input file I say that the F- concentration should be 5e-6, but when PHREEQEC is calculating the F- concentration becomes 5.232e-006. You are entering mol/L and PHREEQC is converting the concentrations to mol/kg water. You have concentrations of about 1 mol/L for some constituents and the conversion to mol/kg water involves density (assumed 1.0) and subtracting the mass of the solutes to find the mass of water. The concentrations in mol/kgw are calculated by dividing by the calculated mass of water. If you set the units to mol/kgw, no conversion will be necessary. 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
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:
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 1966 since Jan 22, 1998.