headspace vial. There are some caveats for the success of this technique, but I won’t get into them here. Please feel free to
contact me for more information on this technique. Figure 2 below shows stylized representations of the solution and FET
approaches for HS-GC. Note the very small sample size in the headspace vial. It really looks like that, and believe it or not, it’s
enough to analyze.
For quantification, very small volumes of standards are used to mimic the small sample amounts used during analysis and to
maintain a single-phase system for our standards. The chromatogram in Figure 3 below shows a standard prepared representing
20mg of a cannabis concentrate sample containing 50ppm residual solvents.
Medical Marijuana « ChromaBLOGraphy: Restek's Chromatography Blog
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