Chromatographic systems and methods for eliminating interference from interfering agents
US7824471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2006 |
| Grant date | Nov 2, 2010 |
| Priority date | — |
| Expiry date | Sep 19, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a chromatographic method for eliminating interference from interfering agents, coming from the gas sample itself or from the system material used to perform the impurities measurements, on impurities to be quantified in a gas sample. The method advantageously relies on the use of an additional valve and an additional sample loop particularly arranged in a G. C. system, and also on an additional supporting gas inlet operatively connected to the system through the additional sample loop for providing the system with a supporting gas comprising at least a predetermined portion of a predetermined active gas that will react with the unwanted interfering impurities, if any, or with the column material to cancel out unwanted active sites. Thus, the method of the present invention can advantageously be used in gas chromatographic systems to improve sensitivity thereof by acting on column separation material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.