Theory of electrophoretic separations. II - Construction of a numerical simulation scheme and its applications

The implementation of a previously derived model describing electrophoretic transport processes is reformulated, and its usefulness is demonstrated by simulating moving boundary electrophoresis and isoelectric focusing with immobilized species. The resulting solution is stable, evolves smoothly when suitable small step sizes are used, and has a loosely defined convergence as the step sizes are made smaller. The major computational problem involves a need to use small spatial step sizes at high current levels.