Supercritical Fluid Extraction and Chromatography Using a Lee Scientific Series 600 SFE/SFC System
Abstract
The Lee Scientific Series 600 supercritical fluid extractor and chromatography system has been evaluated for quantitative analytical chromatography and quantitative on- and off-line extraction using benzo(a) pyrene, pentachlorophenol, and naphthalene spiked silica samples. The silica was spiked by adding chemical/solvent solution with known chemical mass to the silica tumbling, drying under a hood at room temperature, and then remixing. The samples were split so other researchers could perform the traditional Soxhlet and tecator extraction procedures on the same material. The supercritical fluid extraction (SFE) and supercritical fluid chromatography (SFC) was coducted with high purity carbon dioxide as the carrier fluid and mobile phase. On-line extraction utilized a cryofocusing tee on the instrument to immobilize and concentrate the analytes during dynamic extraction of the sample. After the extraction was complete, the tee was thawed and the analytes impulse loaded on the chromatographic column.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1992
- Accession Number
- ADA252601
Entities
People
- Timothy S. Green
Organizations
- Air Force Institute of Technology