Calc.  SED & PREDOM / SED

SED: Simple Equilibrium Diagrams

Format of the Input Data-File

Format of Input Data-Files: Input files consist of: 1) definition of the chemical system; 2) plot information; and 3) concentrations (ranges) for the chemical components.

The plot information for SED is as follows:

[EH,] YCOMP, [Ymin, Ymax,] XCOMP,

where data within [] are optional.

YCOMP and XCOMP describe the variables in the X- and Y-axes as follows:

XCOMP = name for the component in the X-axis.

YCOMP = a text describing the Y-axis:

(Ymin and Ymax = minimum and maximum values for the Y-axis)

If before YCOMP, the text “EH,” is found, the redox potential (instead of pe) is used as the variable in the diagram.

A list of possible diagram types may be obtained from SED by entering a “?” in the plot-definition input line, and running the program: this will make SED complain that “?” is not an acceptable diagram type, and the program will print a list of choices for the plot definition.

Several input file examples may be found in subdirectory “.\EXAMPLES”.