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Analytical Gas Chromatography.

Author: Walter Jennings; Eric Mittlefehldt; Phillip Stremple
Publisher: Burlington : Elsevier Science, 1997.
Edition/Format:   eBook : Document : English : 2nd edView all editions and formats
Summary:
Gas chromatography remains the world's most widely used analytical technique, yet the expertise of a large proportion of chromatographers lies in other fields. Many users have little real knowledge of the variablesin the chromatographic process, the interaction between those variables, how they are best controlled, how the quality of their analytical results could be improved, and how analysis times can be shortened  Read more...
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Genre/Form: Electronic books
Additional Physical Format: Print version:
Jennings, Walter.
Analytical Gas Chromatography.
Burlington : Elsevier Science, ©1997
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Walter Jennings; Eric Mittlefehldt; Phillip Stremple
ISBN: 9780080527208 0080527205
OCLC Number: 862831648
Notes: 6.9 Optimizing Operational Parameters for Specific Columns.
Description: 1 online resource (723 pages)
Contents: Cover image; Title page; Table of Contents; Copyright; PREFACE; ABOUT THE AUTHORS; Chapter 1: INTRODUCTION; 1.1 General Considerations; 1.2 A Simplistic Approach; 1.3 Simplistic Comparisons of Packed and Open Tubular Columns; 1.4 A Simplified Theory of the Chromatographic Process; 1.5 Separation of Components; 1.6 Effect of Carrier Gas Velocity; Chapter 2: THE OPEN TUBULAR COLUMN; 2.1 General Considerations; 2.2 The Tubing; 2.3 Sources of Activity; 2.4 Structural Flaws; 2.5 Flexible Columns of Conventional Glasses; 2.6 Silanol Deactivation; 2.7 Column Coating; Chapter 3: SAMPLE INJECTION. 3.1 General Considerations3.2 Extrachromatographic Phenomena Influencing Band Length; 3.3 Chromatographic Factors Influencing Band Length; 3.4 Hot Vaporizing Injection Methods; 3.5 Programmed Temperature Vaporizing (PTV) Injector; 3.6 On-Column Injection; 3.7 Large-Volume Injection; 3.8 Purge-and-Trap Sampling; 3.9 Selecting the Proper Injection Mode; Chapter 4: THE STATIONARY PHASE; 4.1 General Considerations; 4.2 Stationary Phase Polarity and Selectivity; 4.3 Polysiloxane Stationary Phases: General Comments; 4.4 Dimethyl Siloxane Stationary Phases; 4.5 Other Siloxane Stationary Phases. 4.6 Aryl-Substituted Siloxanes4.7 Bonded, Crosslinked, and/or Immobilized Stationary Phases; 4.8 Polyethylene Glycol Stationary Phases; 4.9 Enantiomer Separations; 4.10 Other Special-Selectivity Stationary Phases; 4.11 Gas-Solid Adsorption Columns; Chapter 5: VARIABLES IN THE GAS CHROMATOGRAPHIC PROCESS; 5.1 General Considerations; 5.2 Volumetric Column Flow; 5.3 Carrier Gas Viscosity; 5.4 Comparing Calculated to Experimental Volumetric Flows; 5.5 Volumetric Column Flow and Average Linear Velocity; 5.6 Regulation of Gas Flow and Gas Velocity. 5.7 Average Linear Velocity and Chromatographic Efficiency5.8 Calculating Reliable Estimates A, B, and C; 5.9 Theory and Practice; 5.10 Choice of Carrier Gas; 5.11 The Effect of Solute Retention Factors; 5.12 The Effect of Column Length and Inside Diameter; 5.13 The Effect of Stationary Phase Film Thickness; 5.14 The Effect of Stationary Phase Diffusivity; 5.15 The Effects of Temperature; 5.16 Optimum Practical Gas Velocity; 5.17 Temperature-Programmed Conditions; 5.18 Column Flow under Temperature-Programmed Conditions; 5.19 Average Linear Velocity under Temperature-Programmed Conditions. 5.20 DS and DM under Temperature-Programmed Conditions5.21 Solute Retention under Temperature-Programmed Conditions; 5.22 Chromatographic Efficiency under Temperature-Programmed Conditions; 5.23 Changes in Solute Elution Order; Chapter 6: COLUMN SELECTION, INSTALLATION, AND USE; 6.1 General Considerations; 6.2 Selecting the Stationary Phase; 6.3 Stationary Phase Selectivity; 6.4 Selecting the Column Diameter; 6.5 Selecting the Column Length; 6.6 Selecting the Stationary Phase Film Thickness; 6.7 Column Installation; 6.8 Column Conditioning.
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Abstract:

Gas chromatography remains the world's most widely used analytical technique, yet the expertise of a large proportion of chromatographers lies in other fields. Many users have little real knowledge of the variablesin the chromatographic process, the interaction between those variables, how they are best controlled, how the quality of their analytical results could be improved, and how analysis times can be shortened to facilitate the generation of a greater numberof more reliable results on the same equipment. An analyst with a more comprehensive understanding of chromatographic principles and.

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