Rapid and quantitative extraction and analysis of trace organics using directly coupled SFE‐GC

Abstract

Abstract Supercritical fluid extraction can be coupled with capillary gas chromatography (SFE‐GC) using commercially‐available on‐column or split/splitless injection ports. While liquid solvent extractions require several hours or even days to perform, SFC‐GC analyses can be completed in ≤ 1 hour including extraction, analyte concentration, and GC separation. SFE‐GC yields chromatographic peak shapes that compare favorably with those obtained using conventional liquid solvent injections. Quantitative extraction and recovery of analytes is usually achieved in 10 minutes, and maximum sensitivity is obtained since the extracted analytes can be quantitatively transferred into the GC column for cryogenic focusing prior to GC analysis. SFE‐GC analysis of a variety of organic pollutants from environmental solids and sorbent resins, and flavor and fragrance compounds from food products will be discussed.