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Total Organic Carbon AnalyzerThe development and testing of a breadboard version of a highly sensitive total-organic-carbon (TOC) analyzer are reported. Attention is given to the system components including the CO2 sensor, oxidation reactor, acidification module, and the sample-inlet system. Research is reported for an experimental reagentless oxidation reactor, and good results are reported for linearity, sensitivity, and selectivity in the CO2 sensor. The TOC analyzer is developed with gravity-independent components and is designed for minimal additions of chemical reagents. The reagentless oxidation reactor is based on electrolysis and UV photolysis and is shown to be potentially useful. The stability of the breadboard instrument is shown to be good on a day-to-day basis, and the analyzer is capable of 5 sample analyses per day for a period of about 80 days. The instrument can provide accurate TOC and TIC measurements over a concentration range of 20 ppb to 50 ppm C.
Document ID
19920048711
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
External Source(s)
Authors
Godec, Richard G.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Kosenka, Paul P.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Smith, Brian D.
(NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Hutte, Richard S.
(Sievers Research, Inc. Boulder, CO, United States)
Webb, Johanna V.
(McDonnell Douglas Space Systems Co. Huntington Beach, CA, United States)
Sauer, Richard L.
(NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 15, 2013
Publication Date
July 1, 1991
Publication Information
Publisher: SAE International
Subject Category
Instrumentation And Photography
Report/Patent Number
SAE Technical Paper 911434
Meeting Information
Meeting: International Conference on Environmental Systems
Location: San Francisco, CA
Country: United States
Start Date: July 15, 1991
End Date: July 18, 1991
Accession Number
92A31335
Distribution Limits
Public
Copyright
Other

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