Sample preparation
Sample preparation - contextSample preparation - motivationPurpose of sample preparationOverview of preparation methods
Liquid liquid extraction (LLE) Solid phase extraction (SPE) Solid phase microextraction (SPME) General description of SPME Illustration of SPME 
Detailed description of SPME Purge and trap (PT) (Accelerated) Solvent extraction ((A)SE) 
Supercritical fluid extraction (SFE) Filter Techniques (FT)Box 10 FiltrationBox 11 SorbentsBox 12 Preconcentration
Self testProblems
End of chapterGeneral description of SPME
principle:
1. phase transfer of analyte from either aqueous sample W or air phase to
sorbent fiber P; pre-concentration of analyte in P according to partition equilibrium:
2. Thermal desorption of analyte from sorbent P into inlet of gas-chromatography
system
advantages:
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disadvantages:
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