Radon transport: laboratory and model study

In order to exploit radon profiles for geophysical purposes and also to estimate its entry indoors, it is necessary to study its transport through porous soils. The great number of involved parameters and processes affecting the emanation of radon from the soil grains and its transport in the source...

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Bibliographic Details
Published in:Radiation protection dosimetry 2015-06, Vol.164 (4), p.575-581
Main Authors: Catalano, R, Immé, G, Mangano, G, Morelli, D, Aranzulla, M
Format: Article
Language:English
Subjects:
Diffusion
Gases
Geological Phenomena
Humidity
Models, Theoretical
Particle Size
Porosity
Radon - analysis
Radon - chemistry
Soil
Soil Pollutants, Radioactive - analysis
Soil Pollutants, Radioactive - chemistry
Temperature
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Summary:In order to exploit radon profiles for geophysical purposes and also to estimate its entry indoors, it is necessary to study its transport through porous soils. The great number of involved parameters and processes affecting the emanation of radon from the soil grains and its transport in the source medium has led to many theoretical and/or laboratory studies. The authors report the first results of a laboratory study carried out at the Radioactivity Laboratory of the Department of Physics and Astronomy (University of Catania) by means of a facility for measuring radon concentrations in the sample pores at various depths under well-defined and controlled conditions of physical parameters. In particular, radon concentration vertical profiles extracted in low-moisture samples for different advective fluxes and temperatures were compared with expected concentrations, according to a three-phase transport model developed by Andersen (Risø National Laboratory, Denmark), showing, in general, a good agreement between measurements and model calculations.
ISSN:0144-8420
1742-3406
DOI:10.1093/rpd/ncv314