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



first a big THANK YOU for developping PHREEQC,
which has lead me to a lot of better understanding.

I'm calculating equilibriums in seawater and, as you
say in the manual, this is a bit beyond the possibilities
of PHREEQC. On the other side, there are examples provided
with PHRREQC which include seawater. So, what do you think
is the approximate error I have to expect ?

For example, if I compare calculated ion speciations to
Millero's "Chemical oceanography", my results agree with
Millero's for most ions (like Na, Mg, K, Ca). But for Cu++,
I calculate 93.2 % Cu(OH)_2 and 5.5 % CuCO_3, while Millero
says 73.8 % CuCO_3, 14.2 % Cu(CO_3)_2-- and 2.2 % Cu(OH)_2.

Do you have an explanation for that result ?

By the way, is there a database which includes iodine ?

Thank you in advance,

Armin Glaser

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/msg00438.html
Last modified: $Date: 2005-09-13 21:04:21 -0600 (Tue, 13 Sep 2005) $
Visitor number 1784 since Jan 22, 1998.