KB003619: What is SPME Technology? - Solid Phase Extraction 

Solid Phase Micro-extraction - SPME is a patented sample preparation technique for GC based on the adsorption of analytes directly from an aqueous sample onto a coated, fused-silica fiber and desorp the analyte . (syringes with these fibers are available ). This sampling technique is fast, easy to use and eliminates the use of organic solvents. The SPME fiber can be inserted into the liquid sample or suspended above the sample for headspace sampling. In headspace sampling, the SPME fiber acts as a "chemical pump," forcing compounds out of the liquid phase into the headspace and then into the fiber