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Headspace—Gas Chromatography

2001; Springer Nature; Linguagem: Inglês

10.1007/978-1-4615-1247-9_2

2214-8019

L. S. Ettre,

Chromatography in Natural Products

After a brief overview of the techniques of static and dynamic headspace sampling and examples are given for the dynamic method (“purge and trap”). With respect to static headspace—gas chromatography (HS-GC) the theoretical background of the technique and the principles of the existing instruments are outlined. Five questions related to static HS-GC are discussed in more detail: trace analysis; ultratrace analysis with cryogenic enhancement of the analytes and elimination of the possible effect of excess water vapor in the sample; sample modification by carrying out reactions in the sample vial; non-equilibrium static HS-GC; and pattern analysis by HS-GC.