Record Display for the EPA National Library Catalog


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
Library Call Number Additional Info Location Last
NTIS  PB91-163774 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/13/1991
Collation 13p
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.