chapter 1 Gradient Elution in Liquid Column Chromatography�Prediction of Retention and Optimization of Separation / chapter 2 Supercritical Fluids for Off-Line Sample Preparation in Food Analysis Prior to Chromatography / chapter 3 Correspondence Between Chromatography, Single-Molecule Dynamics, and Equilibrium: A Stochastic Approach / chapter 4 Solid-Phase Microextraction: A New Tool in Contemporary Bioanalysis / chapter 5 Polyelectrolytes as Stationary Phases in Liquid Chromatography