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PhreeqcI--A GUI for the Geochemical Program PHREEQC
INTRODUCTION
PHREEQC (Parkhurst, 1995) is a computer program that can perform several types of geochemical modeling including speciation, inverse, reaction-path, and 1D advective reaction-transport modeling. PhreeqcI is a Windows-based interface that provides access to all the capabilities of PHREEQC. Data for PHREEQC are entered through a series of keyword data blocks; each data block contains a specific type of information. For example, the SOLUTION keyword data block contains all the information to define the composition of an aqueous solution; EQUILIBRIUM_PHASES keyword data block defines the identity and amount of each mineral in a phase assemblage. The keyword data blocks are used to define the data needed for each type of modeling. Additional keyword data blocks are used to define output options and to define and modify the chemical database. The following sections of the Introduction give an overview of the use of the keyword data blocks for PHREEQC.
- Speciation Modeling
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- Inverse Modeling
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- Reaction-Path Modeling
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- 1D Advective Reaction-Transport Modeling
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- Printing Options
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- Database Files: Elements, Aqueous Species, Exchange Species, Surface Species, and Pure Phases
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PhreeqcI--A GUI for the Geochemical Program PHREEQC - 10 OCT 97
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