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INFLUENCES OF DIFFUSION AND ADVECTIVE FLOW ON THE DISTRIBUTION OF RADON ACTIVITY WITHIN U.S. EPA'S SOIL CHAMBER
Citation:
Mosley*, R B., M Y. Menetrez*, R. Snoddy, AND S. Brubaker Jr. INFLUENCES OF DIFFUSION AND ADVECTIVE FLOW ON THE DISTRIBUTION OF RADON ACTIVITY WITHIN U.S. EPA'S SOIL CHAMBER. ENVIRONMENT INTERNATIONAL. Elsevier BV, AMSTERDAM, Netherlands, 22, Suppl 1(1001):S521-S533, (1999).
Impact/Purpose:
Journal Article
Description:
The paper presents an analysis of steady-state diffusion in the soil for two different conditions of moisture. The model accounts for multiphase emanation and transport. When the position dependence of the moisture profile is taken into account, the model and measurements agree well (average deviation of 5-13%). Non-steady-state measurements are also discussed. Diffusion plays an important role in radon transport even for relatively high permeability (3X10 minus 11 power m2) soil. The implication is that diffusion plays an important role in transporting radon to a point near the building shell even though the mechanism by which radon penetrates the shell may be primarily advective flow.
URLs/Downloads:
Influences of Diffusion and Advective Flow on the Distribution
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