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- W4211036986 abstract "This chapter provides up-to-date theory of analytical gas chromatography (GC)—a technique of separation of components of mixtures (samples) with the purpose of obtaining information about their molecular composition. The theory presented here is designed to address such issues as the effect of column dimensions, carrier gas type and flow rate, temperature programming, and other factors on duration of analysis, the number of peaks that can be resolved, detection limits, and the trade-offs between these performance factors. To get simple and insightful mathematical descriptions of these relations, simplicity of the basic models becomes more important than their accuracy. As a general trend, this chapter favors simplicity over unnecessary accuracy. The secondary factors complicating the models are typically ignored. The chapter starts with the review of relevant theoretical information regarding interaction of organic compounds with liquid polymers, properties of ideal gases, and flow of ideal gases. This information is then used as a basis for addressing such core issues of GC theory as formation of retention times and other parameters of eluting solutes; formation of peak spacing and factors affecting reversal of peak order; and formation of peak widths. This material is used then as the basis for the study of the column optimization—the optimal flow rate, optimal heating rate, and optimal trade-off between a column separation performance, analysis time, and detection limit. The study of the optimization is preceded by the review of the column performance metrics and by formulations of optimization goals." @default.
- W4211036986 created "2022-02-13" @default.
- W4211036986 creator A5037808175 @default.
- W4211036986 date "2021-01-01" @default.
- W4211036986 modified "2023-10-18" @default.
- W4211036986 title "Theory of gas chromatography" @default.
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