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Cryogenic focussing, ohmically heated on-column trapA procedure is described for depositing a conductive layer of gold on the exterior of a fused-silica capillary used in gas chromatography. By subjecting a section of the column near the inlet to a thermal cycle of cryogenic cooling and ohmic heating, volatile samples are concentrated and subsequently injected. The performance of this trap as a chromatographic injector is demonstrated. Several additional applications are suggested and the unique properties of this device are discussed.
Document ID
19920013487
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Springston, Stephen R. (Brookhaven National Lab. Upton, NY, United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1991
Publication Information
Publication: NASA, Washington, Technology 2001: The Second National Technology Transfer Conference and Exposition, Volume 2
Subject Category
Inorganic And Physical Chemistry
Accession Number
92N22730
Funding Number(s)
CONTRACT_GRANT: DE-AC02-76CH-00016
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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