|Abstract Title:||Application of Headspace – Solid-Phase Microextraction Coupled with Gas Chromatography/Mass Spectrometry for the Characterization of Polymeric Materials|
|Session Choice:||Microfluidics & flow process technology|
|Presenter Name:||Dr Peter Kusch|
|Company/Organisation:||Bonn-Rhein-Sieg University of Applied Sciences|
Abstract Information :
Sample preparation is an essential step in analysis, greatly influencing the reliability and accuracy of resulted time and cost of analysis. Most of modern sampling methodologies for chromatographic analysis involve one of the basic mass transfer processes, alone or in combination: partition (where analytes are removed from samples by dissolution in a proper solvent), adsorption (the analyte are bonded or retained over the solid surface) and volatilization (volatile target species are selectively vaporized and separated from the matrix and interfering compounds).
Solid-Phase Microextraction (SPME) is a very simple and efficient, solventless sample preparation method, invented by Pawliszyn and co-workers in 1989. This method has been widely used in different fields of analytical chemistry since its first applications to environmental and food analysis. SPME integrates sampling, extraction, concentration and sample introduction into a single solvent-free step. The method saves preparation time, disposal costs and can improve detection limits. It has been routinely used in combination with gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) and successfully applied to a wide variety of compounds, especially for the extraction of volatile and semi-volatile organic compounds from environmental, biological and food samples
. For the last twenty years, SPME in headspace (HS) mode has been used as a valuable sample preparation technique for identifying degradation products in polymers and for determination of residual monomers and other light-boiling substances in polymeric materials. For more than ten years, our laboratory has been involved in projects focused on the application of HS-SPME-GC/MS for the characterization of polymeric materials from many branches of manufacturing and building industries.
This presentation describes the application examples of HS-SPME-GC/MS technique for the characterization of polymer composites, rubber and packaging materials. Some of the obtained analytical results were then used for troubleshooting and remedial action of the technological processes as well as for health protection of producer and user.