Describe the basic theory, components and applications of the Gas chromatography.

Gas chromatography (GC) is a widely used analytical technique in bioanalysis for separating and analyzing volatile compounds in complex mixtures. The basic theory behind GC involves the partitioning of analytes between a stationary phase and a mobile phase. It is used to analyze gases, liquids, and other volatile substances that can be vaporized without decomposition.

Basic Theory:

Gas chromatography operates on the principle of differential interaction of analytes with two phases: the mobile phase (carrier gas) and the stationary phase (a solid or liquid phase coated on the surface of a solid support). When a sample is injected into the system, the carrier gas transports the sample through the column, which is packed with the stationary phase. As the sample passes through the column, the components of the sample interact with the stationary phase based on their chemical and physical properties, such as polarity, volatility, and molecular weight. These interactions cause the components to travel at different speeds, leading to separation as they reach the detector.

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