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Record Details

Record 34 of 28714
Miniaturized system of a gas chromatograph coupled with a Paul ion trap mass spectrometer
External Online Source: doi:10.1002/jms.768
Author and Affiliation:
Shortt, B. J.(Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA United States)
Darrach, M. R.
Holland, Paul M.
Chutjian, A.
Abstract: Miniature gas chromatography (GC) and miniature mass spectrometry (MS) instrumentation has been developed to identify and quantify the chemical compounds present in complex mixtures of gases. The design approach utilizes micro-GC components coupled with a Paul quadrupole ion trap (QIT) mass spectrometer. Inherent to the system are high sensitivity, good dynamic range, good QIT resolution, low GC flow-rates to minimize vacuum requirements and the need for consumables; and the use of a modular approach to adapt to volatile organic compounds dissolved in water or present in sediment. Measurements are reported on system response to gaseous species at concentrations varying over four orders of magnitude. The ability of the system to deal with complicated mixtures is demonstrated, and future improvements are discussed. The GC/QIT system described herein has a mass, volume and power that are, conservatively, one-twentieth of those of commercial off-the-shelf systems. Potential applications are to spacecraft cabin-air monitoring, robotic planetary exploration and trace-species detection for residual gas analysis and environmental monitoring.
Publication Date: Jan 01, 2005
Document ID:
20050164599
(Acquired May 03, 2005)
Subject Category: LIFE SCIENCES (GENERAL)
Document Type: Journal Article
Publication Information: Journal of mass spectrometry : JMS (ISSN 1076-5174); Volume 40; 1; 36-42
Publisher Information: United Kingdom
Description: In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: ENVIRONMENTAL MONITORING; GAS CHROMATOGRAPHY; MASS SPECTROMETERS; MASS SPECTROSCOPY; MINIATURIZATION; GASES
Other Descriptors: ENVIRONMENTAL MONITORING/METHODS; MASS FRAGMENTOGRAPHY/INSTRUMENTATION/METHODS; MICROCHEMISTRY/INSTRUMENTATION/METHODS; MINIATURIZATION/INSTRUMENTATION/METHODS; COMPLEX MIXTURES/ANALYSIS; GASES/CHEMISTRY; RESEARCH SUPPORT, NON-U.S. GOV'T
Availability Source: Other Sources
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