Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title On-Line Measurement of Nitrous Oxide from Combustion Sources by Automated Gas Chromatography.
Author Ryan, J. V. ; Linak, W. P. ;
CORP Author Acurex Environmental Corp., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher 1992
Year Published 1992
Report Number EPA-68-DO-0141; EPA/600/A-92/215;
Stock Number PB93-106847
Additional Subjects Air pollution detection ; Nitrogen oxide(N2O) ; Combustion products ; Gas chromatography ; Air pollution control ; Chemical analysis ; Fossil fuels ; Electron-capture detectors ; Automation ; Performance evaluation ;
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB93-106847 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/08/1993
Collation 15p
The paper discusses on-line measurement of nitrous oxide (N2O) from combustion sources by automated gas chromatography. Fossil fuel combustion is suspected of contributing to measured increases in the ambient concentrations of N2O. Characterization of N2O emissions from fossil fuel combustion and associated pollution control systems has been hindered by the generation of N2O from nitrogen oxides, sulfur dioxide, and moisture present in the sample vessel while samples await analysis. To truly assess N2O emissions from fossil fuel combustion, a real-time or near real-time measurement technique is required. To accomplish this, a gas chromatograph equipped with an electron capture detector was configured and automated. The system is capable of detection levels below ambient concentrations and a practical quantifying range of 0.1 to 200 ppm. A precolumn backflushing system negates the effects of interferents present in fossil fuel combustion emissions. The automated system, capable of one on-line measurement every 8 minutes, has been used to evaluate N2O emissions from a variety of combustion sources, fuels, and post-combustion pollution control techniques.