AquaChem
is a fully-integrated software package developed specifically for graphical and numerical analysis of geochemical data sets. AquaChem features a powerful database that can be customized and configured to include an unlimited number of attributes per sample and a built-in database of inorganic chemicals that are commonly-used for geochemical analyses, calculations and plotting. AquaChem covers a wide range of calculations frequently used for the analysis, interpretation and comparison of aqueous geochemical data. The analysis tools in AquaChem range from simple unit transformations, mixing calculations, statistics and charge balances to more complex calculations involving correlation matrices and geothermometrics. These powerful analytical capabilities in AquaChem are complimented by a comprehensive selection of commonly used graphical techniques to portray the chemical characteristics of geochemical and water quality data for single samples and groups of samples. The fully customizable graphical features of AquaChem facilitate the understanding and interpretation of the many complex interactions between the groundwater and aquifer materials. AquaChem's graphical plotting techniques include Piper, Stiff, Durov, Langelier-Ludwig, Schoeller and ternary diagrams, radial plots, scatter graphs, frequency histograms, pie charts, geothermometer plots and time series graphs. In addition, AquaChem features a graphical interface to the popular geochemical modeling program PHREEQC for calculating equilibrium concentrations (or activities) of chemical species in solution and saturation indices of solid phases in equilibrium with a solution.
