Method and system for preparing samples for gas chromatography
US6475437B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jan 24, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/2575
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to a method and device for preparing samples for gas chromatography, the sample material being guided through a liquid chromatograph (1) by a solvent and being monitored by a detector (2), and, on the basis of the detector (2) recognizing a chromatographic region of interest, the sample material of this region being removed from the stream of sample material leaving the liquid chromatograph (1) and being analyzed by gas chromatography. In this case, the stream of sample material leaving the liquid chromatograph (1) is guided through a flow-through cuvette (4), and the removal is carried out, until the end of the chromatographic region of interest, via a syringe (18) which, when the sample material of the region of interest reaches the flow-through cuvette (4), is introduced into the stream of sample material guided through the flow-through cuvette (4) and is drawn upwards at a predetermined ratio to the transport rate of the stream of sample material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.