Back to Annual Meeting Page		American Public Health Association 133rd Annual Meeting & Exposition December 10-14, 2005 Philadelphia, PA

Abstract #117908

Mubeena Begum, MD, College of Public Health, University of South Florida, 13201 Bruce B Downs, MDC 56, Tampa, FL 33612, 813-975-8037, bmubeena@yahoo.com and Noreen Poor, PhD, Environmental & Occupational Health, University of South Florida College of Public Health, 13201 Bruce B. Downs Blvd., MDC 56, Tampa, FL 33612-3805.

Source apportionment is a quantitative determination of the contributions of pollutants from their sources to ambient levels. It is used for developing emission control strategies that effectively reduce exposures and health risks, and prevent degradation of air quality. The Chemical Mass Balance (CMB) model is a receptor model used to identify the presence of and quantify source contributions to receptor concentrations. Samples of 24-hours total suspended particulate matter both coarse and fine particle fractions were collected from 1st to 31st May 2002 as part of the BRACE intensive sampling, at Gandy, Sydney, Simmons and Tower Dairy sites in Florida. Samples were acquired on 47-mm diameter PTFE filters with a Rupprecht & Patashnick Partisol dichotomous sequential air sampler. Source profiles were obtained from the EPA database, SPECIATE, for input into the model. Filters were analyzed for 42 elements. The average mass concentration of the ambient data from the 4 sites were run using CMB8 receptor model to estimate the contributing sources impacting the receptor site. Results show major contributing sources to PM2.5 at the four sites were coal combustion, ammonium bisulfate, marine aerosol. Major contributing sources to PM2.5-10 were soil dust, marine aerosol, sodium sulfate. Major contributing species for PM2.5 were sulfate, nitrate, organic carbon, ammonium and for PM2.5-10 were chloride, silica, calcium, sulfur, aluminum. No 24-hour average PM concentration exceeded USEPA (NAAQS) standards. Many trace metals were below detection limits and could not be used in the model. Generic source profiles may not be appropriate for local sources.

Learning Objectives:

• Discuss about latest techniques/models available to do source apportionment of particulate matter.
• Method to develop and study an epidemiologic study to determine the health effects PM2.5 and PM10 have on residents living around Gandy, Sydney, Simmons and Tower Dairy sites in Tampa, Florida.

Keywords: Air Pollutants,

Presenting author's disclosure statement:

I wish to disclose that I have NO financial interests or other relationship with the manufactures of commercial products, suppliers of commercial services or commercial supporters.