The document provides an overview of gas chromatography including its principles, instrumentation, and applications. It discusses how gas chromatography separates components using a mobile gas phase and either a solid or liquid stationary phase. Key aspects summarized are: - Gas chromatography involves the separation of mixture components based on how they partition between a mobile gas phase and stationary phase. Components elute at different rates depending on their solubility. - Instrumentation includes a carrier gas, injection port, column, detector, and temperature control system. Common detectors are the thermal conductivity detector, electron capture detector, and flame ionization detector. - Derivatization can be used to modify non-volatile compounds to make them detectable by gas chromatography. Temperature programming