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Title: Fundamentals Of Gas Chromatography
Author: Ulrich Gokeler
Source: 2012 International School of Hydrocarbon Measurement
Year Published: 2012
Abstract: Chromatography is an analytical technique to physically separate constituents in multi component mixtures with the purpose of quantification. Quantification of specific constituents is the actual objective of chromatography. Unlike other analytical techniques such as spectroscopy, chromatography physically separates targeted constituents from each other or interferences prior to actual quantification. Chromatography is one of the most widely used analytical techniques. It is applied in the laboratory environment, as portable devices or for on-line and automatic measurement. This paper discusses gas chromatography, particularly automatic on-line or process gas chromatography. Although it is important to understand that a gas chromatograph is a part of an on-line and automatic separation system which includes sample extraction, sample transport to and from analytical system, sample preparation and data communication, this paper concentrates on the gas chromatograph only. Described here are the fundamental aspects of gas chromatography, from the actual separation to column switching configurations and from carrier gas to detectors. The fundamentals are particularly focused on the separation and quantification of natural gas constituents and the determination of its physical properties

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