Analyte pre-concentrator for gas chromatography
US7311757B2 · kind B2 · utility
15Cited by
39References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2005 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Nov 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/128
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An analyte pre-concentrator for gas chromatography is disclosed generally comprising a tube having a restricted outlet and packed with an adsorbent, wherein the tube serves as the liner of a chromatographic injector, as an adsorbent trap coupled to a chromatographic column, and/or as an adsorbent trap coupled to a headspace sampler. Preferably, a heating device allows the tube to be heated. In a preferred embodiment, the analyte pre-concentrator further comprises a column isolating accessory so that a chromatographic column can be temporarily isolated from substances flowing through the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.