ABSTRACT
Gas chromatography (GC) is an important separation technique that has experienced great popularity within numerous disciplines of the chemical sciences. Technological advancements in column fabrication as well as the development of new stationary phase chemistries have played a significant role in increasing the applicability of GC. Advances in column technology have played a significant role in transforming the face of GC. Before optimizing any GC analysis, the selection of an appropriate column type as well as stationary phase is an important prerequisite. GC columns are broadly divided into two classes, namely, packed columns and open tubular columns. The selectivity of a stationary phase plays a crucial role in separating multi-component samples. To coat a thin layer of liquid stationary phase on the surface of tubing material, the surface tension of the stationary phase should be lower than the critical surface tension of the coating surface.
