Actions for ATMOSPHERIC AEROSOL SOURCE-RECEPTOR RELATIONSHIPS [electronic resource] : THE ROLE OF COAL-FIRED POWER PLANTS

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ATMOSPHERIC AEROSOL SOURCE-RECEPTOR RELATIONSHIPS [electronic resource] : THE ROLE OF COAL-FIRED POWER PLANTS

Published
Pittsburgh, Pa. : Carnegie-Mellon University, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
65 pages : digital, PDF file
Additional Creators
Carnegie Mellon University and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
This report describes the technical progress made on the Pittsburgh Air Quality Study (PAQS) during the period of September 2003 through February 2004. Significant progress was made this project period on the analysis of ambient data, source apportionment, and deterministic modeling activities. Results highlighted in this report include chemical fractionation of the organic fraction to quantify the ratio of organic mass to organic carbon (OM/OC). The average OM/OC ratio for the 31 samples analyzed so far is 1.89, ranging between 1.62 and 2.53, which is consistent with expectations for an atmospherically processed regional aerosol. Analysis of the single particle data reveals that a on a particles in Pittsburgh consist of complex mixture of primary and secondary components. Approximately 79% of all particles measured with the instrument containing some form of carbon, with Carbonaceous Ammonium Nitrate (54.43%) being the dominant particle class. PMCAMx predictions were compared with data from more than 50 sites of the STN network located throughout the Eastern United States for the July 2001 period. OC and sulfate concentrations predicted by PMCAMx are within ±30% of the observed concentration at most of these sites. Spherical Aluminum Silicate particle concentrations (SAS) were used to estimate the contribution of primary coal emissions to fine particle levels at the central monitoring site. Primary emissions from coal combustion contribute on average 0.44 ± 0.3 {micro}g/m³ to PM{sub 2.5} at the site or 1.4 ± 1.3% of the total PM{sub 2.5} mass. Chemical mass balance analysis was performed to apportion the primary organic aerosol. About 70% of the primary OC emissions are from vehicular sources, with the gasoline contribution being on average three times greater than the diesel emissions in the summer.
Report Numbers
E 1.99:825277
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
04/01/2004.
Allen L. Robinson; Spyros N. Pandis; Cliff I. Davidson.
(US)
Type of Report and Period Covered Note
Other Publications;
Funding Information
FC26-01NT41017
View MARC record | catkey: 13832706