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Radon Adsorption in Charcoal

Maier, Andreas ; Jones, Jesse ; Sternkopf, Sonja ; Friedrich, Erik ; Fournier, Claudia ; Kraft, Gerhard (2022):
Radon Adsorption in Charcoal. (Publisher's Version)
In: International Journal of Environmental Research and Public Health, 18 (9), MDPI, e-ISSN 1660-4601,
DOI: 10.26083/tuprints-00019566,
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Item Type: Article
Origin: Secondary publication DeepGreen
Status: Publisher's Version
Title: Radon Adsorption in Charcoal
Language: English
Abstract:

Radon is pervasive in our environment and the second leading cause of lung cancer induction after smoking. Therefore, the measurement of radon activity concentrations in homes is important. The use of charcoal is an easy and cost-efficient method for this purpose, as radon can bind to charcoal via Van der Waals interaction. Admittedly, there are potential influencing factors during exposure that can distort the results and need to be investigated. Consequently, charcoal was exposed in a radon chamber at different parameters. Afterward, the activity of the radon decay products 214Pb and 214Bi was measured and extrapolated to the initial radon activity in the sample. After an exposure of 1 h, around 94% of the maximum value was attained and used as a limit for the subsequent exposure time. Charcoal was exposed at differing humidity ranging from 5 to 94%, but no influence on radon adsorption could be detected. If the samples were not sealed after exposure, radon desorbed with an effective half-life of around 31 h. There is also a strong dependence of radon uptake on the chemical structure of the recipient material, which is interesting for biological materials or diffusion barriers as this determines accumulation and transport.

Journal or Publication Title: International Journal of Environmental Research and Public Health
Journal volume: 18
Issue Number: 9
Publisher: MDPI
Collation: 7 Seiten
Uncontrolled Keywords: radon, charcoal, adsorption, desorption
Classification DDC: 500 Naturwissenschaften und Mathematik > 530 Physik
Divisions: 05 Department of Physics > Institute of Nuclear Physics
Date Deposited: 02 Feb 2022 13:14
Last Modified: 02 May 2022 12:07
DOI: 10.26083/tuprints-00019566
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-195661
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/19566
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