Record Display for the EPA National Library Catalog


Main Title Analysis of Urban Aerosols in Major US Cities - Implications for Asthmatic Airways.
Author S. V. Lynch
CORP Author California State Univ., San Francisco.; California Environmental Protection Agency, Sacramento.; California State Air Resources Board, Sacramento.
Year Published 2010
Report Number CARBRA-07-356; ARB/R10-906
Stock Number PB2011-100260
Additional Subjects Air pollution effects ; Aerosols ; Urban areas ; Asthma ; Sampling ; Prevalence ; Respiratory diseases ; Bacteria ; Airway inflammation ; Human exposure ; Seasonal variations ; Cities ; United States ; Geographic areas ; Boston(Massachusetts) ; Philadelphia(Pennsylvania) ; Detroit(Michigan) ; San Francisco(California)
Library Call Number Additional Info Location Last
NTIS  PB2011-100260 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 34p
The objective of the proposed study was to compare seasonal aerosol samples collected during Spring, Summer, Fall and Winter from 3 US cities with high prevalence of asthma, Boston, Philadelphia and Detroit, to determine the effect of seasonal variation on bacterial urban aerosol composition. In addition, comparisons were made between aerosol bacterial communities from these three cities and those present in San Francisco in the Spring. To determine if there were any similarities between aerosol and airway bacterial communities comparison were also made between aerosol and respiratory samples from asthmatic patients (collected in a separate multi-center US trial). Finally analysis of commonalities and distinctions in urban aerosols in East coast versus West coast samples were examined to determine whether geographic location impacted the bacterial community present at these sites. Bacterial community composition varied across sites but appeared, at least in the samples analyzed, to be more associated with specific geographic location than by seasonality. Phyla detected in these samples represented a vast diversity of bacteria and included many members of the Firicutes and Bacteroidetes, two of the primary phyla colonizing the human gastrointestinal tract as well as members of the Sphingobacteria and Actinobacteria that have previously been detected in the respiratory tract of patients with inflammatory airway disease. A compairson of bacterial communities from Boston, Philadelphia and Detroit (collected in the Spring) to those detected in the same season in San Francisco revealed a core of bacteria common to all samples.