Solid phase microextraction (SPME) has demonstrated to be a rapid, low cost, and solvent free extraction technique for organic compounds encountered in aqueous samples.  It consists of a holder and a fiber.  The fibers are made of fused-silica coated with different polymeric adsorbent materials.  The stationary phase can be either polar or no polar.  Some of them are composed of carboxen, polydimethylsiloxane, divinylbenzene, and polyacrylate.  Basically, the SPME fiber is inserted into the headspace of a sealed sample vial where the analytes, i.e. volatile compounds, are absorbed into the fiber until equilibrium is reached.  Then, the SPME fiber is inserted and exposed into the gas chromatograph (GC) where the compounds are thermally desorbed and ready for analysis.  It has been analyzed different sulfur compounds standards with their calibration curves using the SPME technique.  Trying different fibers have been part of the process in order to obtain the best results.

Volatile compounds analysis using solid phase microextraction (SPME)

243rd National Meeting (2012)

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