N2O analysis in the atmosphere via electron capture-gas chromatography

Details N2O analysis in the atmosphere via electron capture-gas chromatography N2O analysis in the atmosphere via electron capture-gas chromatography

Oct 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976georl...3..615r&link_type=abstract

Geophysical Research Letters, vol. 3, Oct. 1976, p. 615-618. U.S. Environmental Protection Agency

Physics

4

Air Sampling, Electron Capture, Gas Chromatography, Nitrous Oxides, Air Pollution, Pollution Monitoring, Radiation Measuring Instruments, Stratosphere, Troposphere

Scientific paper

The potential of commercially available pulse-modulated electron capture detector (ECD)-equipped gas chromatographs for direct measurement of ambient levels of N2O is assessed. Since the sensitivity of ECD to N2O is directly proportional to the detector operating temperature and detector standing current, it is necessary to use a 'hot' ECD (250-350 C). The method is shown to be very precise with a standard error not exceeding 1% for automated analysis of ambient air samples. The technology is available to permit highly accurate routine direct analysis of N2O in the troposphere and stratosphere. Both captured air samples or direct real-time measurement from research vessels or airborne platforms are possible.

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