Visual MINTEQ – a brief tutorial

Visual MINTEQ – a brief tutorial Visual MINTEQ was developed from the DOS program MINTEQA2, which was originally coded by the U.S. Environmental Protection Agency (EPA). Since 2000, when Visual MINTEQ was first published on the web, it has departed considerably from the original MINTEQA2 code, and therefore it is today a program on its own right. The aim of the program is to simulate equilibria and speciation of inorganic solutes in natural waters. The development of Visual MINTEQ was supported by the Swedish Research Council (VR) and by the Foundation for Strategic Environmental Research (MISTRA). You are free to download it to your own PC from the following WWW address: http://www2.lwr.kth.se/english/OurSoftware/vminteq/index.html A help file, vminhelp.htm, can be accessed from the program by clicking Help – Open help file. Consult the help file for topics not covered by this brief tutorial. Define the problem When you start working with MINTEQ, the first thing to do is to define the problem. If you have an old problem file with indata, you File - Open from the scroll-down menus. Otherwise, you will add the data of the problem yourself, starting from the Main menu, which is shown when the program is opened for the first time. On the Main menu, check the following: 1 • If the pH value is known, it is ’fixed’ in the problem, so choose this option and enter the pH value. If the pH is to be calculated, you should generally choose ...