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GC/MS Gas Separator Operates At Lower TemperaturesExperiments show palladium/silver tube used to separate hydrogen carrier gas from gases being analyzed in gas-chromatography/mass-spectrometry (GC/MS) system functions satisfactorily at temperatures as low as 70 to 100 degrees C. Less power consumed, and catalytic hydrogenation of compounds being analyzed diminished. Because separation efficiency high even at lower temperatures, gas load on vacuum pump of mass spectrometer kept low, permitting use of smaller pump. These features facilitate development of relatively small, lightweight, portable GC/MS system for such uses as measuring concentrations of pollutants in field.
Document ID
19910000253
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Sinha, Mahadeva P.
(Caltech)
Gutnikov, George
(California State Polytechnic Univ.)
Date Acquired
August 14, 2013
Publication Date
June 1, 1991
Publication Information
Publication: NASA Tech Briefs
Volume: 15
Issue: 6
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
NPO-17930
Accession Number
91B10253
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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