Record Display for the EPA National Library Catalog


Main Title Phase Distributions of Airborne Polycyclic Aromatic Hydrocarbons in Two U.S. Cities.
Author Lewis, R. G. ; Kelly, T. J. ; Chuang, J. C. ; Callahan, P. J. ; Coutant, R. W. ;
CORP Author Battelle, Columbus, OH.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 28 Feb 92
Year Published 1992
Report Number EPA-68-D0-0007;
Stock Number PB92-164979
Additional Subjects Air pollution monitoring ; Aromatic polycyclic hydrocarbons ; Mobile pollutant sources ; Stationary sources ; Urban areas ; Air samplers ; Particulates ; Vapors ; Seasonal variations ; Boston(Massachusetts) ; Houston(Texas) ; Phase distribution
Library Call Number Additional Info Location Last
NTIS  PB92-164979 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p
Ambient air concentrations of 18 polycyclic aromatic hydrocarbons (PAHs) were monitored in Boston, Massachusetts and Houston, Texas. The PAHs were generated by fossil fuel and wood combustion, motor vehicle traffic, oil refineries, or other sources. Since PAHs may exist in air both as vapors and adsorbed on particles a denuder sampler that denudes the air of vapors and collects only particles was operated next to a traditional sampler at each site from August 27, 1990 to August 27, 1991. Phase distributions were determined on a seasonal basis. A significant proportion of each PAH was found to be in the vapor phase. The amount volatilized from the particles depended on vapor presure, atmospheric concentration of the PAH, and ambient temperature.