Tandem differential mobility ion mobility spectrometer for chemical vapor detection
US8754366B2 · kind B2 · utility
6Cited by
17References
7Claims
0Family size
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Key dates
| Filing date | Jan 11, 2005 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Jan 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/624
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A DMS-IMS chemical sensing system employs two ion-separation technologies in tandem to extract signals of specific chemicals from the glut of signals present. The sensing system generally includes an atmospheric pressure ion generation system, a Differential Mobility (DMS) system, a time-of-flight IMS (TOF-IMS) system, and an ion detector system. The DMS extracts a narrow range of trace chemicals from an environmental sample for subsequent analysis, and a TOF-IMS then analyzes the resulting narrow range of isolated chemicals, allowing compound-specific detection thresholds at sub-ppb concentrations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.