The Role of Aerosols in Enhancing SVOC Flux between Air and Indoor Surfaces and its Influence on Exposure

Abstract

In this research we consider the possibility that SVOC-containing particles can move deep into the concentration boundary layer above a surface and sorp/release SVOCs there. This phenomenon would force the boundary layer to become thinner, and the gas-surface SVOC flux to be enhanced. We develop a model that accounts for SVOC flux due to both gas phase and particle mediated transport. Results for monodisperse particles show that flux can be enhanced by as much as a factor of 5 over gas-phase transport alone, even in the absence of particle deposition to the surface. an exponential correlation is found to fit the results for systems of polydisperse particles at realistic concentrations. an illustrative example shows that the gas-phase DEHP concentration and emission rate are predicted to be up to 4 times higher by our model than that by prior model estimates.

Department(s)

Civil, Architectural and Environmental Engineering

Comments

National Natural Science Foundation of China, Grant 51136002

Keywords and Phrases

Exposure analysis; Indoor air quality (IAQ); Mass transfer; Particles; SVOCs

International Standard Book Number (ISBN)

978-162748075-8

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Scimago Journal and Country Rank, All rights reserved.

Publication Date

01 Dec 2012

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