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Development of an Atmospheric Pressure Ionization Mass SpectrometerA commercial atmospheric pressure ionization mass spectrometer (APIMS) was purchased from EXTREL Mass Spectrometry, Inc. (Pittsburgh, PA). Our research objectives were to adapt this instrument and develop techniques for real-time determinations of the concentrations of trace species in the atmosphere. The prototype instrument is capable of making high frequency measurements with no sample preconcentrations. Isotopically labeled standards are used as an internal standard to obtain high precision and to compensate for changes in instrument sensitivity and analyte losses in the sampling manifold as described by Bandy and coworkers. The prototype instrument is capable of being deployed on NASA C130, Electra, P3, and DC8 aircraft. After purchasing and taking delivery by June 1994, we assembled the mass spectrometer, data acquisition, and manifold flow control instrumentation in electronic racks and performed tests.
Document ID
19990041062
Acquisition Source
Ames Research Center
Document Type
Other
Date Acquired
August 19, 2013
Publication Date
January 1, 1998
Subject Category
Optics
Funding Number(s)
CONTRACT_GRANT: NAG2-786
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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