High temperature flame jet for gas chromatography
US4999162A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1988 |
| Grant date | Mar 12, 1991 |
| Priority date | — |
| Expiry date | Aug 26, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/62
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A flame detector comprising a ceramic flame jet for use in a high temperature gas chromatography system is disclosed. The interior volume of the flame jet is fabricated of a highly inert ceramic material so that sample eluting from the end of a gas chromatography column located within the interior volume of the flame jet does not contact any metallic surface en route to the flame. By avoiding sample contact with metallic surfaces, interferences which are prone to occur at high temperature, such as peak tailing, are avoided. In a further aspect the flame detector is treated with a silylating reagent to further passivate the surfaces which may affect the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.