| Title: | Miniaturized system of a gas chromatograph coupled with a Paul ion trap mass spectrometer |
| Author(s): | Shortt BJ; Darrach MR; Holland PM; Chutjian A; |
| Address: | "Atomic and Molecular Collisions Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California 91109, USA" |
| ISSN/ISBN: | 1076-5174 (Print) 1076-5174 (Linking) |
| 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" |
| Keywords: | Complex Mixtures/analysis Environmental Monitoring/*methods Gas Chromatography-Mass Spectrometry/*instrumentation/methods Gases/chemistry Microchemistry/*instrumentation/methods Miniaturization/*instrumentation/methods; |
| Notes: | "MedlineShortt, B J Darrach, M R Holland, Paul M Chutjian, A eng Research Support, Non-U.S. Gov't England 2004/12/25 J Mass Spectrom. 2005 Jan; 40(1):36-42. doi: 10.1002/jms.768" |
