SPME/GC Analyses of Sulfur Gases and VOCs, Using a Carboxen/PDMS Fiber

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Courtesy of Sigma-Aldrich Co., LLC

Sample extraction of sulfur compounds and VOCs by traditional methods can be difficult and expensive. Typically, sulfur analysis requires concentration of the gas using adsorbent tubes containing carbon adsorbents. Analysis by such means, however, requires the use of an expensive thermal desorption unit to heat the tubes before transferring the gases to a gas chromatograph. Analysis of VOCs likewise can be cumbersome. Our 5µm Carboxen/poly-dimethyl-siloxane (PDMS) solid phase micro-extraction (SPME) fiber is specifically designed for extracting gases and other small and low molecular weight analytes, and effectively adsorbs very volatile compounds. This fiber is coated with Carboxen-1006 adsorbent, a porous carbon with a surface area of 1200m2/g, widely used in air sampling.

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