This document is an introduction to the U.S. Geological Survey's user guide for Phreeqc, a computer program for speciation, batch-reaction, one-dimensional transport, and inverse geochemical calculations. It provides information on the program's capabilities and limitations.
This guide provides an overview of PHREEQC (Version 2), a computer program for geochemical modeling. It describes the program’s capabilities, limitations, and the theoretical basis for aqueous speciation, ion exchange, surface complexation, solid solutions, transport, and inverse modeling.
The manual includes instructions for installing the Win32 and Unix versions, conventions for data input, detailed examples of speciation, batch‑reaction, transport, and inverse calculations, as well as appendices with notation and database file descriptions.
| Software version | 2 |
|---|---|
| Supported platforms | Win32, Unix |
| Document type | User guide |
The manual includes a section titled “How to obtain the software and manual” that provides the necessary information.
PHREEQC can perform speciation, batch‑reaction, one‑dimensional transport, and inverse geochemical calculations.
The guide contains a section “Installation and execution of the Win32 version” with step‑by‑step instructions.
Yes, the manual provides a separate section for installing and running the Unix version.