Gas Chromatography

Chromatography (from Greek chroma “colour” and graphein “to write”) is the collective term for a set of laboratory techniques for the separation of mixtures. This definition refers to gas chromatography for the the environmental monitoring and analysing industries and applications, using equipment such as a GC monitor and / or GC analyser. Gas Chromatography (GC), also sometimes known as Gas-Liquid Chromatography, (GLC), is a separation technique in which the mobile phase is a gas. Gas chromatography is always carried out in a column, which is typically “packed” or “capillary”. Gas Chromatography (GC) is based on a partition equilibrium of analyte between a solid stationary phase (often a liquid silicone-based material) and a mobile gas (most often Helium). The stationary phase is adhered to the inside of a small-diameter glass tube (a capillary column) or a solid matrix inside a larger metal tube (a packed column). It is widely used in analytical chemistry; though the high temperatures used in GC make it unsuitable for high molecular weight biopolymers or proteins (heat will denature them), frequently encountered in biochemistry, it is well suited for use in the petrochemical, environmental monitoring and remediation, and industrial chemical fields. It is also used extensively in chemistry research.

AMETEK MOCON

Environmental and industrial gas detection, measurement, and analysis

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