Gas chromatographic “in-column” spectroscopic analysis
US10302601B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2017 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | May 2, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A chemical detector for rapid, simultaneous detection of multiple chemicals including chemical warfare agents, toxic industrial chemicals, and explosives having one or more gas chromatography columns each with a chemosorbent or a chemo-reactive stationary phase and an infrared-transparent base, a bright infrared light source, a mechanism to direct the light source to any point along any of the columns, and an infrared sensor. Another disclosed detector has one or more gas chromatography columns each on the surface of a substrate having at least one infrared-transparent waveguide pattern, a bright infrared light source, and at least one ring resonator for each column, where each ring resonator is coated with a chemosorbent or a chemo-reactive stationary phase, and where each ring resonator spectroscopically probes the stationary phase. Also disclosed are the related methods for chemical detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.