NDLI: Flight contaminant trace analyser. phase 1: chromatographic input system (Document No: 19750013516)

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Flight contaminant trace analyser. phase 1: chromatographic input system (Document No: 19750013516)

Content Provider	NASA Technical Reports Server (NTRS)
Copyright Year	1975
Description	The development of a chromatographic column capable of resolving compounds associated with spacecraft atmospheres is presented. Consideration is given to sampling techniques, column parameters and operation, and column interface with a mass spectrometer. A capillary column coated with a mixture of polyalkylene glycols is found to provide the best selectivity for resolving multicomponent mixtures found in spacecraft atmospheres. Temperature programming and isothermal operation of the column are evaluated and it is found that temperature programming has a shorter analysis time for a given carrier gas flow rate and overall superior resolution. It is observed that hydrogen provides a 15% savings in analysis time over helium. Following the optimization of column operational parameters, a mixed phase Ucon capillary is prepared for evaluation during the column test period in which the test sample is automatically analyzed. Analysis of the multicomponent test mixture is completed within 45 minutes provided temperature programming is used. All but two of the test compounds are well resolved.
File Size	1623144
Page Count	74
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19750013516
Archival Resource Key	ark:/13960/t2v45h538
Language	English
Publisher Date	1975-04-01
Access Restriction	Open
Subject Keyword	Gas Chromatography Chemical Analysis Spacecraft Contamination Spacecraft Cabin Atmospheres Trace Contaminants Spacecraft Environments Mass Spectroscopy Environmental Control Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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