Directly coupled supercritical fluid extraction—gas chromatographic analysis of polycyclic aromatic hydro-carbons and polychlorinated biphenyls from environmental solids
✍ Scribed by Steven B. Hawthorne; David J. Miller
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 885 KB
- Volume
- 403
- Category
- Article
- ISSN
- 1873-3778
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✦ Synopsis
A method has been developed for the direct coupling of supercritical fluid extractions with gas chromatography (SFE-GC) that yields good chromatographic peak shapes and quantitative recovery of analytes from environmental solids with a total extraction and analysis time of less than one hour. Maximum sensitivity is achieved and analyte degradation or loss is minimized since the extracted species are quantitatively transferred into a fused-silica capillary gas chromatographic column for cryogenic focusing followed by normal GC analysis using flame ionization, electron-capture, or mass spectrometric (MS) detection. Coupled SFE-GC-MS determinations of polycyclic aromatic hydrocarbons from National Bureau of Standards urban dust (SRM 1649) gave excellent agreement with certified values.