Apparatus for analyzing solid sample with supercritical fluid
US4597943A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Nov 29, 1984 |
| Grant date | Jul 1, 1986 |
| Priority date | — |
| Expiry date | Nov 29, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N30/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for analyzing a sample with a supercritical fluid includes a fluid container containing as an extraction solvent a fluid obtained by compressing and liquefying a substance which is a gas at ambient temperature and atmospheric pressure. A pump is provided for drawing the fluid from its container through a suction line and delivering it through a delivery line, while the heads of the pump are cooled by a cooling device. An extraction mechanism is provided for bringing the fluid in a supercritical state into contact with the sample to be analyzed and extracting a specific component or components from the sample. A trapping mechanism is provided downstream of the extraction mechanism for collecting the extracted component or components from the fluid. An analyzing mechanism can be connected to the trapping mechanism by changeover valves for analyzing the collected component or components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.