Transcription of An Introduction To Headspace Sampling In Gas ...
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An Introduction To Headspace Sampling In Gas ...
AN Introduction TO Headspace Sampling IN GAS CHROMATOGRAPHYFUNDAMENTALS AND THEORY Andrew TiplerChromatography Research and Technology Manager PerkinElmer, Inc. 2 Introduction 3 Fundamental Theory of Equilibrium Headspace Sampling 3 Volatile Analytes in a Complex Sample 3 Partition Coefficients 4 Phase Ratio 5 Vapor Pressures and Dalton s Law 6 Raoult s Law 7 Activity Coefficients 7 Henry s law 8 Putting It All Together 9 Effect of Sample Volume 9 Effect of Temperature 10 Effect of Pressure 11 Effect of Modifying the Sample Matrix 12 Effect of the Equilibration Time 12 Specialized HS Injection Techniques 13 The Total Vaporization Technique 13 The Full Evaporation Technique 14 Multiple Headspace Extraction 15 Transferring the Headspace
An Introduction to Headspace Sampling in Gas Chromatography Introduction This document is intended to provide the newcomer to headspace sampling with a concise summary of the theory and principles of this exciting technique. Enough information is included here for the user to understand the basic concepts and relationships in HS sampling to apply
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