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Main Title Investigation of the performance of sulfation and nitration plates {microform} /
Author Sickles, J. E. ; Michie, R. M.
Other Authors
Author Title of a Work
Michie, R. M.
CORP Author Research Triangle Inst., Research Triangle Park, NC.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Publisher U.S. Environmental Protection Agency, Environmental Sciences Research Laboratory,
Year Published 1984
Report Number EPA/600/3-84/073; EPA-68-02-3170-74
Stock Number PB84-211184
Subjects Air--Pollution--United States--Measurement
Additional Subjects Sulfation ; Nitration ; Monitors ; Gas detectors ; Plates ; Gas analysis ; Concentration(Composition) ; Performance evaluation ; Calibrating ; Wind velocity ; Humidity ; Chemical analysis ; Exposure ; Design criteria ; Temperature ; Sulfur dioxide ; Nitrogen dioxide ; Quality assurance ; Sulfates ; Passive monitors
Library Call Number Additional Info Location Last
NTIS  PB84-211184 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 36 p. ; 28 cm.
An inexpensive method for measuring atmospheric pollutants which has been in use for several decades is the passive reactive monitor. Such a device contains a reactive substance which is exposed to the ambient air for a period of time. The pollutants in the surrounding air react with the reactive surface of the monitor. A quantitative chemical determination is made of the reaction product. A calibration factor is then applied to estimate the pollutant concentration in the ambient air averaged over the exposure period. Passive monitors, known as sulfation and nitration plates, are available from commercial suppliers. The objective of this study was to evaluate the performance of commercial sulfation and nitration plates. The sensitivity of plate calibration factors to pollutant concentration (SO2 and NO2), simulated wind, speed, humidity, and temperature was determined. Test results indicate, for sulfation and nitration plates, that sulfation calibration factors are extremely sensitive to wind speed. A slight effect of relative humidity was observed on calibration factors for both types of plates. Nitration calibration factors are also extremely sensitive to concentration and temperature.
Caption title. "Aug. 1984." "EPA-600/3-84-073." Microform.