|
Dear Sir,
I am writing to check how are the CEC
determinations supposed to be done for PHREEQC modelling. Could you please send
me the recipe? I believe they should be determined in whole sediment and not
just in the fine fraction.
I have all my CEC values determined for
fine fraction. When I tried to model cation exchange using these values they
seemed to be too high. Then I tried to recalculate these CEC values considering
the amount of fine material in the sediment and I got CEC values about one order
of magnitude less and that simulated better the results. However, I am not sure
it is correct to do this approximation.
Could you please clarify for me this
question?
Thanking in advance for your kind
help.
Teresa Melo
M. Teresa Condesso de Melo
Universidade de Aveiro Departamento de Geociências Campus Universitário de Santiago 3810-193 Aveiro PORTUGAL |
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/msg00399.html
Email:dlpark@usgs.gov
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 2873 since Jan 22, 1998.