Gas monitoring apparatus and gas monitoring method
US7663098B2 · kind B2 · utility
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7Claims
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Key dates
| Filing date | Feb 9, 2007 |
| Grant date | Feb 16, 2010 |
| Priority date | — |
| Expiry date | Dec 15, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/24
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A gas monitoring apparatus capable of real-time detection of a kind of chemical warfare agent, namely diphenylcyanoarsine (DC) and/or diphenylchloroarsine (DA). Atmospheric pressure chemical ionization mass spectrometry is carried out in the positive ionization mode, the total amount of DC and DA is determined from the intensity of an ion common to DC and DA, the DC concentration is determined from the intensity of an ion specific to DC, and the difference between them is regarded as the DA concentration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.