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DEPOSITION OF SEMI-VOLATILE AIR TOXIC POLLUTANTS TO THE GREAT LAKES: A REGIONAL MODELING APPROACH
Citation:
Ching, J.K.S., F.S. Binkowski, AND T. Clark. DEPOSITION OF SEMI-VOLATILE AIR TOXIC POLLUTANTS TO THE GREAT LAKES: A REGIONAL MODELING APPROACH. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-93/239 (NTIS PB94113016).
Description:
A modeling approach is described that will be able to predict wet and dry deposition of airborne semi-volatile organic toxic compounds applicable on a regional scale. n principle, these compounds cycle between the aerosol or the gas phases depending primarily on their vapor pressure. his study outlines an approach using as its modeling framework, the U.S. Environmental Protection Agency's Regional Particulate Model (RPM). he size distribution and the chemical composition available from the RPM can provide the sites for the condensation or volatilization of these semi-volatiles. arametric attachment formulation for these pollutants are discussed and a requirements plan presented. t is demonstrated that the approach can handle a wide range of volatility characteristic of various compounds. xamples of the use of the RPM for organochlorines and persistent aromatic hydrocarbon pollutants are presented.