Integrated instrument for supercritical fluid sample extraction, sample separation and concentration
US5198115A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1991 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Jul 9, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/143
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An integrated sample extraction and separation system includes a number of substantially identical supercritical fluid extraction modules and sample separation modules connected in common to a source of supercritical fluid and modifier and to instruments for sample analysis. Each of the supercritical fluid extraction columns is provided with separate pressure and temperature controls. Preferably, each sample separation module provides the choice of sample separation by dissolving the extracted sample in solvent, by adsorption, or by size exclusion chromatography. Either the supercritical fluid or various solvents may be used as the mobile phase in the sample separation step.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.