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[Corrected Title: Solid-Phase Extraction of Polar Compounds from Water] Automated Electrostatics Environmental ChamberA solid-phase extraction (SPE) process has been developed for removing alcohols, carboxylic acids, aldehydes, ketones, amines, and other polar organic compounds from water. This process can be either a subprocess of a water-reclamation process or a means of extracting organic compounds from water samples for gas-chromatographic analysis. This SPE process is an attractive alternative to an Environmental Protection Administration liquid-liquid extraction process that generates some pollution and does not work in a microgravitational environment. In this SPE process, one forces a water sample through a resin bed by use of positive pressure on the upstream side and/or suction on the downstream side, thereby causing organic compounds from the water to be adsorbed onto the resin. If gas-chromatographic analysis is to be done, the resin is dried by use of a suitable gas, then the adsorbed compounds are extracted from the resin by use of a solvent. Unlike the liquid-liquid process, the SPE process works in both microgravity and Earth gravity. In comparison with the liquid-liquid process, the SPE process is more efficient, extracts a wider range of organic compounds, generates less pollution, and costs less.
Document ID
20110015075
Acquisition Source
Johnson Space Center
Document Type
Other - NASA Tech Brief
Authors
Sauer, Richard
(NASA Johnson Space Center Houston, TX, United States)
Rutz, Jeffrey
(Krug Life Sciences, Inc. Houston, TX, United States)
Schultz, John
(Wyle Labs., Inc. Houston, TX, United States)
Date Acquired
August 25, 2013
Publication Date
August 1, 2005
Publication Information
Publication: NASA Tech Briefs, August 2005
Subject Category
Man/System Technology And Life Support
Report/Patent Number
MSC-22899
Report Number: MSC-22899
Distribution Limits
Public
Copyright
Public Use Permitted.
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