Exploring the future in chemical analysis research, this volume provides a broad overview of the applications of ionic liquids in various areas of analytical chemistry. It reviews the properties and structure of ionic liquids and the role of these materials in optical, electrochemical, and biochemical sensor technology. The book examines ionic liquids in gas, liquid, and countercurrent chromatography, along with their use as electrolyte additives in capillary electrophoresis. It also discusses gas solubilities, liquid-liquid extraction, and the separation of metal ions. The final chapters cover molecular, Raman, nuclear magnetic resonance, and mass spectroscopies.