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Evaluation of a catalytic reduction technique for the measurement of total reactive odd-nitrogen NOy in the atmosphereThe suitability of a technique for the measurement of total reactive odd-nitrogen NOy-containing species in the atmosphere has been examined. In the technique, an NOy component species, which may include NO, NO2, NO3, HNO3, peroxyacetyl nitrate, and particulate nitrate, are catalytically reduced by CO to form NO molecules on the surface of a metal converter tube, and the NO product is detected by chemiluminescence produced in reaction with O3. Among the catalysts tested in the temperature range of 25-500 C, Au was the preferred catalyst. The results of laboratory tests investigating the effects of pressure, O3, and H2O on NOy conversion, and the possible sources of interference, have shown that the technique is suitable for atmospheric analyses. The results of a test in ambient air at a remote ground-based field site are included.
Document ID
19860051543
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Fahey, D. W.
(National Oceanic and Atmospheric Administration Boulder, CO, United States)
Eubank, C. S.
(National Oceanic and Atmospheric Administration Boulder, CO, United States)
Hubler, C. S.
(National Oceanic and Atmospheric Administration Boulder, CO, United States)
Fehsenfeld, F. C.
(NOAA, Aeronomy Laboratory, Boulder CO, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1985
Publication Information
Publication: Journal of Atmospheric Chemistry
Volume: 3
ISSN: 0167-7764
Subject Category
Geophysics
Accession Number
86A36281
Distribution Limits
Public
Copyright
Other

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