Method quantitatively converts water vapor to carbon dioxide permitting direct and rapid analysis of mixed-gas streams for water content

Warf, J. C.

English

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NASA TECH BRIEF 
L
June 1970	 Brief 70-10013 
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage commercial 
application. Tech Briefs are available on a subscription basis from the Clearinghouse for Federal Scientific and Technical 
Information, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Division, NASA, Code UT, Washington, D.C. 20546. 
Quantitative Conversion of Water to Carbon Dioxide 
To aid in the laboratory analysis of water-bearing 
mixtures, a method has been developed for quantita-
tively converting water vapor to carbon dioxide. 
A micro-bubbler assembly was constructed of a 
10-cm length of tubing 9-mm in diameter, packed 
with small glass beads and fitted with 0-ring connec-
tions. One ml of a 10% concentration of N, N 1 - car-
bonyl-diimidazole reagent in adiponitrile was placed 
in the micro-bubbler, and the water-bearing gas was 
bubbled through the reagent. The apparatus was pre-
flushed with helium prior to use, and the carbon 
dioxide gas generated was recovered from a liquid 
nitrogen trap. 
Because of the ease of mass-spectrographic analysis 
of carbon dioxide, this reaction permits direct and 
rapid analysis of mixed-gas streams for water content.
Note: 
No additional information is available. Specific 
questions, however, may be directed to: 
Technology Utilization Officer 
NASA Pasadena Office 
4800 Oak Grove Drive 
Pasadena, California 91103 
Reference: B70-10013 
Patent status: 
No patent action is contemplated by NASA. 
Source: J. C. Warf of 
Caltech/JPL 
under contract to 
NASA Pasadena Office 
(NPO-10731) 
Category 04 
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Quantitative conversion of water to carbon dioxide

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