Particle sampling preconcentrator
US7141786B2 · kind B2 · utility
41Cited by
28References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2004 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Sep 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2001/2223
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus is provided for identifying trace amounts of substances of interest in an air flow. The apparatus includes an inlet for receiving the air flow and an outlet for exhausting major portions of the air flow. The outlet is offset from the inlet. A porous impactor is disposed in alignment with the inlet and is impacted by particles entrained in the air flow. The porous impactor is heated sufficiently to vaporize particles impinging thereon. A detector communicates with the porous impactor and is operative for identifying substances of interest in the vaporized particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.