Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Processes and Techniques (hierarchy name)
4. [processes and techniques by specific type]
5. analysis and testing techniques

Additional parents:

1. top of the aat hierarchies
2. Activities Facet
3. Functions
4. functions
5. functions by general context
6. analytical functions
7. sampling

Anotations

Scope note:

Sample extraction technique used for chromatographic analysis of dilute solutions in difficult matrices, liquid and gaseous. Solid-phase microextraction (SPME) has two discrete steps. Extraction is achieved by solute absorption from the sample matrix into a thick layer of silicone or related adsorptive material. Analytes are then transferred into a chromatography inlet system by gaseous or liquid means.