The Partitioning Model of Pahs betweeen Gaseous and Particulate Phases based On PM10? in Urban Atmosphere
Journal
Journal of Environmental Science and Health. Part A: Environmental Science and Engineering and Toxicology
Journal Volume
27
Journal Issue
8
Pages
2051-2074
Date Issued
1992
Author(s)
Abstract
A new partitioning model of the PAHs between gaseous and particulate phases for PM10¼, Log {(A/F) PM10¼} = m/T + b, was investigated in this study. Where A and F stand for PAHs amount in gas and particulate phases respectively. PM10¼ is the mass of PM10¼, T represnets the ambient temperature, and m and b are constants. A basic assumption of current model is the proportionality between the particle surface area available for adsorption of PAHs and the particle mass. But, this is not true most of time. Thus, the partitioning model is further modified by using surface area of particle. Both models were evaluated by real measurements of PAHs content in gaseous and particulate phases. A series of ambient sampling of PAHs for gaseous and particulate phases by using the PM10¼ sampler, cascade impactor, and volatile vapor sampler (PS-1 sampler) were performed during 1990 and 1991 in downtown of Taipei city. In particular, it is the first time the real measurement of PM10¼ surface area in urban atmosphere has ever been taken by Automated Adsorption System. Also, partice shape of PM10¼ separated by the cascade impactor were examined by SEM. The performance of partitioning models of both PM10¼ mass and surface area were evaluated by the regression analysis between the term on the left hand side of the model and the inverse of temperature for Fluoranthene, Pyrene and Chrysene +Benzo(a)anthracene. It is indicated that partitioning model using surface area does provide higher coefficient of determination(r2), particularly for Chr+BaA. © 1992, Taylor & Francis Group, LLC. All rights reserved.
Subjects
PAHs; Partitioning Models; PM10¼; Surface Area
SDGs
Other Subjects
Aromatic compounds; Gases; Hydrocarbons; Particulate emissions; Benzo(a)anthracene; Chrysene; Fluoranthene; Gaseous phase; PAHs; Particulate phase; Partitioning models; Polycyclic aromatic hydrocarbons; Pyrene; Air pollution; chrysene; fluoranthene; polycyclic aromatic hydrocarbon; pyrene; air monitoring; air pollution; air temperature; article; atmospheric dispersion; partition coefficient; physical model; physical phase; suspended particulate matter; urban area
Type
journal article