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An intercomparison of five ammonia measurement techniquesResults obtained from five techniques for measuring gas-phase ammonia at low concentration in the atmosphere are compared. These methods are: (1) a photofragmentation/laser-induced fluorescence (PF/LIF) instrument; (2) a molybdenum oxide annular denuder sampling/chemiluminescence detection technique; (3) a tungsten oxide denuder sampling/chemiluminescence detection system; (4) a citric-acid-coated denuder sampling/ion chromatographic analysis (CAD/IC) method; and (5) an oxalic-acid-coated filter pack sampling/colorimetric analysis method. It was found that two of the techniques, the PF/LIF and the CAD/IC methods, measured approximately 90 percent of the calculated ammonia added in the spiking tests and agreed very well with each other in the ambient measurements.
Document ID
19920066615
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Williams, E. J.
(NOAA, Aeronomy Laboratory; Cooperative Institute for Research in Environmental Sciences, Boulder CO, United States)
Sandholm, S. T.
(NASA Langley Research Center Hampton, VA, United States)
Bradshaw, J. D.
(NASA Langley Research Center Hampton, VA, United States)
Schendel, J. S.
(Georgia Institute of Technology Atlanta, United States)
Langford, A. O.
(NOAA, Aeronomy Laboratory; Cooperative Institute for Research in Environmental Sciences, Boulder CO, United States)
Quinn, P. K.
(NOAA, Pacific Marine Environmental Laboratory, Seattle WA, United States)
Lebel, P. J.
(NASA Langley Research Center Hampton, VA, United States)
Vay, S. A.
(NASA Langley Research Center Hampton, VA, United States)
Roberts, P. D.
(College of William and Mary Williamsburg, VA, United States)
Norton, R. B.
(NOAA, Aeronomy Laboratory; Cooperative Institute for Research in Environmental Sciences, Boulder CO, United States)
Date Acquired
August 15, 2013
Publication Date
July 20, 1992
Publication Information
Publication: Journal of Geophysical Research
Volume: 97
Issue: D11,
ISSN: 0148-0227
Subject Category
Instrumentation And Photography
Accession Number
92A49239
Distribution Limits
Public
Copyright
Other

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