The SPECIES program is a solution equilibrium model to teach concepts of ion activity and ion speciation as applied to soil solutions. The program is written as a spreadsheet file that may be used with Lotus 1-2-3 or compatible spreadsheet software. The spreadsheet format provides a user-friendly computer environment and leaves the computational portions of the program transparent to the user. Results are easily manipulated on screen, exported to disk, or output as hard copy using standard spreadsheet functions.
Barak, P. 1990. SPECIES: A spreadsheet program for modeling speciation of soil solution. J. Agron. Educ. 19:44-46. (available on the Internet at /~barak/species.htm)
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Note: An updated revision of SPECIES to utilize features of current spreadsheets, specifically Excel, QuattroPro, and Lotus, is in development. Contact the author for information as to progress of this project.
This page was last modified by Phillip Barak, Univ. of Wisconsin, on 14 Apr 2000. All rights reserved. This material may not be reposted on any server without express permission of the author.