Title

Experimental Measurements of Diffusivity of Vapors through Porous Substrates

Document Type

Conference Proceeding

Publication Date

5-4-2007

Publication Title

American Physical Society Physics

Conference Name

2007 Ohio Section of the APS Spring Meeting 52(5)

Abstract

The release of numerous toxic chemicals, such as hydrocarbons, pesticides, chemical warfare agents, etc.; into soil, subsurface, concrete, brick and asphalt poses a great threat to the biosphere environment. The quantification and extent of spread of these chemicals has primary importance for carrying out the remediation work. There are several well known spread mechanisms which govern the mass transport in porous media. They include various regimes of liquid and vapor transport/diffusion. Modeling the transport of vapors in porous substrates requires the knowledge of the diffusivity of each particular vapor in each substrate. We present a simple, effective and inexpensive experimental method and apparatus for measurement of vapor diffusivity in porous media.

Rights Statement

© 2007 SAO/NASA ADS

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