Electrolytic conductivity detection process
US4649124A · kind A · utility
15Cited by
9References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1985 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Sep 9, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/8405
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas chromatograph system is provided with an improved electrolytic conductivity cell (16) for detecting a selected material species in a fluid stream from conventional gas chromatograph (10, 12) having both gas and liquid phases. Planar electrodes (80, 82) are spaced by an insulator (84) and define borehole diameters (88, 90, 92) which enhance the generated signal-to-noise ratio by providing a short fluid transit time within the conductivity detecting volume compared with the effective time of the chromatographic event of interest. A pneumatic damper (108) may be further included to reduce generated system signal noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.