Record Display for the EPA National Library Catalog


Main Title Environmental exposure system for studying air pollution damage to materials /
Author Spence, John W. ; Stump, Fred D. ; Haynie, Fred H. ; Upham., James B.
Other Authors
Author Title of a Work
Spence, John W.
CORP Author National Environmental Research Center, Research Triangle Park, N.C.
Publisher Environmental Sciences Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1975
Report Number EPA-650/3-75-001
Stock Number PB240615
OCLC Number 52568204
Subjects Air--Pollution--Environmental aspects ; Building materials--Deterioration
Additional Subjects Air pollution ; Test equipment ; Experimental design ; Sulfur dioxide ; Nitrogen ; Ozone ; Accelerated tests ; Weathering ; Humidity chambers ; Atmospheric corrosion tests ; Simulation ; Air pollution effects(Materials)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA-650/3-75-001 Research Triangle Park Library/RTP, NC 01/03/2017
ELBD ARCHIVE EPA 650-3-75-001 Received from HQ AWBERC Library/Cincinnati,OH 10/04/2023
ELBD RPS EPA 650-3-75-001 repository copy AWBERC Library/Cincinnati,OH 11/20/2018
ERAD  EPA 650/3-75-001 Region 9 Library/San Francisco,CA 03/18/2013
NTIS  PB-240 615 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation vi, 38 pages : illustrations ; 28 cm.
Design features of a controlled-environment exposure system consisting of five chambers are described. The purpose of the environmental system is to provide simulated environments for conducting statistical experiments for determining pollutant damage to materials. Design features include independent controls for regulating temperature, relative humidity, and concentration of gaseous sulfur dioxide, nitrogen dioxide, and ozone. To achieve accelerated weathering, the system also includes a variable dew/light cycle that incorporates chill racks to produce dew and xenon lamps to simulate sunlight. Before initiating exposure studies, differences in lighting and pollutant distribution among the chambers were minimized to below 10 percent variations for 95 percent of the measurements.
"EPA-650/3-75-001 " "January 1975." PB 240 615--NTIS.