Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Indoor Concentration Modeling of Aerosol Strong Acidity.
Author Zelenka, M. ; Waldman, J. ; Suh, H. ; Koutrakis, P. ;
CORP Author Environmental and Occupational Health Sciences Inst., Piscataway, NJ. Exposure Measurement and Assessment Div. ;Harvard School of Public Health, Boston, MA.;Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.
Publisher 1993
Year Published 1993
Report Number EPA-R816740; EPA/600/A-93/126;
Stock Number PB93-204071
Additional Subjects Indoor air pollution ; Air pollution sampling ; Acidity ; Aerosols ; Periodic variations ; Study estimates ; Models ; Ammonia ; Reprints ; Indoor environment ; Indoor denuder sampler
Library Call Number Additional Info Location Last
NTIS  PB93-204071 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/23/1993
Collation 9p
A model for estimating indoor concentrations of acid aerosol was applied to data collected during the summer of 1989, in a densely populated location in New Jersey. The model, from a study of a semi-rural community in Pennsylvania, was used to estimate indoor concentrations of aerosol strong acidity (H+) at an elderly care residence in suburban New Jersey. The purpose of the present work is to assess the applicability of the model for predicting H+ exposures in a suburban environment and to evaluate the models performance for daytime and nighttime periods. Indoor and outdoor samples were taken at an elderly care home between June 20 and July 30, 1989. The indoor and outdoor monitoring schedule collected two 12-h samples per day. Samples were taken with the Indoor Denuder Sampler (IDS). Samples were analyzed for indoor and outdoor concentrations of aerosol strong acidity (H+), ammonia (NH3), and anion determination. The model generally underestimated the indoor H+ concentration. Slight improvement was seen in the model estimate of H+ for the nighttime period (7:00 pm to 7:00 am, local time). The model applied to the site in New Jersey did not predict the indoor H+ concentrations as well as it did for the experiment from which it was developed.