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DICARBOXYLIC ACID CONCENTRATION TRENDS AND SAMPLING ARTIFACTS
Citation:
MCDOW, S. R. AND J. RAY. DICARBOXYLIC ACID CONCENTRATION TRENDS AND SAMPLING ARTIFACTS. Presented at International Aerosol Conference (AAR/ISAM), St. Paul, MN, September 10 - 15, 2006.
Impact/Purpose:
The goal of this task is to develop methods and models to reduce the uncertainty in quantifying local and regional air pollutant source impacts on ambient samples collected in speciated PM, air toxic, and semi-continuous measurement networks. A combination of high resolution sampling, organic and inorganic analytical methods, and models will be developed and evaluated to reduce the uncertainty in source apportionment:
(1) semi-continuous inorganic species sampling
(2) inorganic analysis
(3) organic analysis for medium flow samples
(4) multivariate receptor models for ambient samples
(5) regional and local models
In addition, this task contributes to two additional tasks that have research focused on reducing the uncertainty in source apportionment: Identify Sources of Human Exposure (21176), and NAAQS implementation (21179).
Description:
This abstract describes a slide presentation on results of dicarboxylic acid concentration trends and sampling artifacts to be presented at the 2006 International Aerosol Conference sponsored by the American Association for Aerosol Research in St. Paul, Minnesota on September 10-15. Samples were collected in Philadelphia in the summer of 1999 during the Northeast Oxidant and Particulate Study (NEOPS). Implications for accurate sampling of dicarboxylic acids and potential for their use as secondary organic aerosol tracers are discussed.