The two main chromatographic techniques used in modern analytical chemistry are Gas. Chromatography (GC) and High Performance Liquid Chromatography (HPLC). HPLC uses a liquid mobile phase to transport the analytes (sample) through the column, which is packed with a stationary phase material. In contrast, Gas Chromatography uses a gaseous mobile phase to transport sample. components through either packed columns or hollow capillary columns.
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