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Title: IONPAIR : a chemical speciation program for calcareous and gypsiferous soil solutions
Authors: Marion, Giles M. (Giles Michael)
Keywords: Calcareous solutions
Chemical speciation model
Computer model
Gypsiferous solutions
Gypsum content
Computer programs
IONPAIR (computer program)
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 91-12.
Description: Special Report
Abstract: The IONPAIR program was designed to speciate the chemical composition of calcareous and gypsiferous soil solutions. The program uses the Newton-Raphson algorithm to solve by successive approximations a set of non-linear equations relating ionic concentrations and activities. This program allows the user to specify as input any two ofthe following three variables: pH, alkalinity and PCO2. This flexibility allows one to check the internal consistency of experimental measurements, equilibrium constants and model assumptions. For example, is total alkalinity equal to inorganic carbon alkalinity? IONPAIR was designed as a "stand-alone" program, which means that it is easily usable and is available in both Macintosh and MSDOS versions.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Special Report

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