Gas monitoring apparatus and gas monitoring method

Details Gas monitoring apparatus and gas monitoring method Gas monitoring apparatus and gas monitoring method

2007-02-09

2010-02-16

Berman, Jack I (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S281000, C250S288000, C702S023000, C436S173000

Reexamination Certificate

active

07663098

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.

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Kim et al., “A Rapid and Sensitive Analysis of DA in Water by Gas Chromatography/Mass Spectrometry”, 2005, Analytical Sciences vol. 21, pp. 513-516.

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