Record Display for the EPA National Library Catalog


Main Title Protocol for applying and validating the CMB model for PM2.5 and VOC
Author Watson, J. G. ;
Other Authors
Author Title of a Work
Watson, John G.
Coulter, Thomas C.
Lewis, Charles W.
CORP Author Desert Research Inst., Reno, NV.;Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
Publisher U.S. Environmental Protection Agency, Office of Air Quality Planning & Standards, Emissions, Monitoring & Analysis Division, Air Quality Modeling Group,
Year Published 2004
Report Number EPA-451/R-04-001
Stock Number PB2005-108910
OCLC Number 61110831
Additional Subjects Protocols ; Validation ; Air quality models ; Particulates ; Particle size ; Volatile organic compounds ; US EPA ; Photochemistry ; Air pollution ; CMB(Chemical mass balance) ; Chemical mass balance
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EKBD  EPA-451/R-04-001 Research Triangle Park Library/RTP, NC 07/22/2005
NTIS  PB2005-108910 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 1 v. (various pagings) : ill. ; 30 cm.
The Chemical Mass Balance (CMB) air quality model is one of several models that have been applied to air resources management. Receptor models use the chemical and physical characteristics of gases and particles measured at source and receptor to both identify the presence of and to quantify source contributions to receptor concentrations. The CMB receptor model consists of a solution to linear equations that express each receptor chemical concentration as a linear sum of products of source profile abundances and source contributions. The CMB model is applicable to multi-species data sets, the most common of which are chemically characterized particulate matter (PM) and volatile organic compounds (VOC). PM2.5 and PM10 (mass of particles with aerodynamic diameters less than 2.5 and 10 micrometers respectively) are regulated by National Ambient Air Quality Standards (NAAQS, EPA, 1997a). VOC are not specifically regulated, but they are precursors for ozone, which is subject to NAAQS (EPA, 1997a). CMB model results are used to determine how much different sources contribute to ambient concentrations. This knowledge is usually used with source attributions determined by other models to justify emissions reduction strategies. 1.1 Protocol Objectives This protocol describes how to use the CMB model in practical applications to determine the contributions of different sources to PM2.5 and VOC. Its objectives are to: Document measurement approaches and data sources for source and receptor input data; Describe the seven step applications and validation protocol to be followed when using the CMB model for source apportionment; and Present examples for PM2.5 and VOC apportionment using contemporary data sets and source types.
Project Officers: C. Thomas Coulter and Charles W. Lewis. "December 2004." "EPA-451/R-04-001." Includes bibliographical references. Desert Research Institute, University and Community College System of Nevada