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Title: Fundamentals Of Gas Chromatography
Author: Paul E. Kizer
Source: 1995 International School of Hydrocarbon Measurement
Year Published: 1995
Abstract: On line gas chromatography is today being chosen more and more in the natural gas industry for monitoring of gas quality. The calculations of the gas volumes in modern electronic flow meters requires not only BTU (A BTU, British Thermal Unit, is a measure of heal) information, but specific gravity, Mol. % CO2 and Mol. % N2 as well. In addition, the current AGA-8 supercompressibility equations also require a complete analysis for the detailed method of calculation of Fp. Most natural gas custody transfer contracts today use MMBTU rather than MCF as the accounting units of gas transfer. Also, modern micropacked columns are providing faster cycle times for time critical BTU measurement applications. For these reasons mentioned above, and the fact that the installation requirements for chromatographs are less stringent than calorimetric methods, the use of gas chromatographs has become standard practice.

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