ExtractChem Model |
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The program can be downloaded from the software download area. |
Year: 2007
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Description:This program is developed to predict the major ion, B composition, electrical conductivity (EC) and osmotic pressure (OP) of a soil solution at a desired water content based on the known ion composition at another water content.The major uses of the model are envisioned as:
The program is based on the chemical routines used in the UNSATCHEM model (Suarez and Simunek, 1996, 1997). It considers major ions, boron, and the chemical processes of cation exchange, precipitation-dissolution of calcite and gypsum, and boron adsorption using the constant capacitance model. The model can be run in batch mode or in individual cases with display to the screen. |
References:D.L. Suarez and J. Simunek, 1997. UNSATCHEM: Unsaturated water and solute transport model with equilibrium and kinetic chemistry. Soil Sci. Soc. Am. J. 61:1633-1646.Suarez, D.L., and J. Simunek. 1996. UNSATCHEM code for simulating one-dimensional variably saturated water flow, heat transport, carbon dioxide production and transport, and multicomponent solute transport with major ion equilibrium and kinetic chemistry. U.S. Salinity Laboratory Tech. Report No. 129. |
Contact:Donald SuarezUSDA-ARS U.S. Salinity Laboratory 450 W Big Springs Road Riverside, CA 92507-4617 Tel: 951-369-4815 Fax: 951-342-4960 Donald.Suarez@ars.usda.gov |