Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Particulate Characteristics and Visual Effects of the Atmosphere at Research Triangle Park.
Author Conner, W. D. ; Bennett, R. L. ; Weathers, W. S. ; Wilson, W. E. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher c1991
Year Published 1991
Report Number EPA/600/J-91/026;
Stock Number PB91-183392
Additional Subjects Aerosols ; Atmospheric effects ; Visibility ; Light scattering ; Particle size distribution ; Sulfur ; Carbon ; Sulfates ; Meteorological data ; Atmospheric chemistry ; Reprints ; Research Triangle Park(North Carolina)
Library Call Number Additional Info Location Last
NTIS  PB91-183392 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/04/1991
Collation 9p
During a one-month period in the fall of 1987 a wide range in the visual quality of the atmosphere at Research Triangle Park, NC, was observed. During the period, the light scatter coefficient; SO2, NO2, and O3 concentrations; temperature; relative humidity; and radiation intensity of the atmosphere were continuously monitored. In addition, 60 filter samples were intermittently collected with two dichotomous (large and small particle) size-selective samplers. The dichotomous samplers were operated concurrently to obtain samples on Teflon and quartz filters for different analyses. Also collected were six impactor samples for sulfate size distribution analysis; and at selected times during the study, long-path measurements were made of the atmospheric extinction coefficient and the extinction of contrast by the atmosphere. (Copyright (c) 1991--Air & Waste Management Association.)