Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Characterization and Reconstruction of Historical London, England, Acidic Aerosol Concentrations.
Author Ito, K. ; Thurston., G. D. ;
CORP Author New York Univ. Medical Center, Tuxedo Park. Inst. of Environmental Medicine.;Health Effects Research Lab., Research Triangle Park, NC.
Publisher c1989
Year Published 1989
Report Number EPA-R-814023 ;EPA-R-811650; EPA/600/J-89/448;
Stock Number PB91-109405
Additional Subjects Air pollution ; Aerosols ; Smoke ; Winter ; Statistical analysis ; Sulfur dioxide ; Wind(Meteorology) ; Humidity ; Acidity ; Reprints ; Air pollution monitoring ; London(England) ; Atmospheric temperature
Library Call Number Additional Info Location Last
NTIS  PB91-109405 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 03/04/1991
Collation 10p
Several past studies of the historical London air pollution record have reported an association between daily mortality and British Smoke levels. However, the pollution index does not give direct information on particulate mass or its chemical composition. A more specific particulate matter index, aerosol acidity, was measured at a site in central London, and daily data are availble for the period 1963-1972. British Smoke and SO2 were also measured at the same site. Also, meteorological parameters were routinely measured at a nearby British Meteorological Office. Thus, daily fluctuation of the acidic aerosols was characterized in terms of other environmental parameters. Each of the other parameters analyzed seems necessary, but not sufficient to explain a high level of acidic aerosol. Overall, about half of the variance of log-transformed daily fluctuations of acidic aerosols can be explained by a combination of parameters including SO2 and British Smoke concentrations, temperature, ventilation by wind, and humidity. The rest of the variance cannot be explained by the parameters included in the analysis. Potential factors responsible for the unique variance would be variations in the availability of basic gases to cause neutralization and variation in the availability of catalytic metal salts. Because the acidic aerosol has a unique component of variation, it may be possible to distinguish health effects due to this specific pollutant from other available pollution indices or environmental factors.