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RECORD NUMBER: 13 OF 49

OLS Field Name OLS Field Data
Main Title Field Comparison of Methods for the Measurement of Gaseous and Particulate Contributors to Acidic Dry Deposition.
Author Sickles, J. E. ; Hodson, L. L. ; McClenny, W. A. ; Paur, R. J. ; Ellestad, T. G. ;
CORP Author Research Triangle Inst., Research Triangle Park, NC. ;Atmospheric Environment Service, Downsview (Ontario). ;Unisearch Associates, Inc., Toronto (Ontario). ;Northrop Services, Inc., Research Triangle Park, NC.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher c1990
Year Published 1990
Report Number EPA-68-02-4544; EPA/600/J-90/363;
Stock Number PB91-163774
Additional Subjects Air pollution sampling ; Air pollution detection ; Deposition ; Dry methods ; Air samplers ; Acidification ; Nitrogen oxides ; Sulfur oxides ; Continuous sampling ; Canada ; Comparison ; Gas analysis ; Chemical analysis ; Ammonia ; Nitrogen hydrides ; Field tests ; Reprints ; Foreign technology
Holdings
Library Call Number Additional Info Location Last
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NTIS  PB91-163774 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/13/1991
Collation 13p
Abstract
A field study was conducted to compare methods for sampling and analysis of atmospheric constituents that are important contributors to acidic dry deposition. Three multicomponent samplers were used: the Canadian filter pack (FP), the annular denuder system (ADS), and the transition flow reactor (TFR). A tunable diode laser absorption spectrometer (TDLAS) provided continuous reference measurements of NO2 and HNO3. Nitrogen dioxide was also monitored with continuous luminol-based chemiluminescence monitors and with passive sampling devices (PSDs). The study was designed to provide a database for statistical comparison of the various methods with emphasis on the multicomponent samplers under consideration for use in a national dry deposition network. The study was conducted at the EPA dry deposition station in Research Triangle Park, NC between 29 September and 12 October, 1986. Daily averaging and/or sampling times were employed for the 13-day study; weekly samples were also collected, but results from these samples are not compared in the paper. Different measurements of ambient concentrations of the following constituents are compared: total particulate and gaseous NO3(-), HNO3, NO2, total particulate NH4(-), NH3, total particulate SO4(-), and SO2.