Radon adsorption in charcoal

  • 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.

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Author:Andreas MaierORCiDGND, Jesse Jones, Sonja Sternkopf, Erik FriedrichORCiD, Claudia FournierORCiDGND, Gerhard KraftGND
Parent Title (English):International journal of environmental research and public health
Publisher:MDPI AG
Place of publication:Basel
Document Type:Article
Date of Publication (online):2021/04/22
Date of first Publication:2021/04/22
Publishing Institution:Universit├Ątsbibliothek Johann Christian Senckenberg
Release Date:2021/09/28
Tag:adsorption; charcoal; desorption; radon
Issue:9, art. 4454
Page Number:7
First Page:1
Last Page:7
This research was funded by the Federal Ministry of Education and Research, Germany, grant numbers 02NUK017A and 02NUK050A.
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
6 Technik, Medizin, angewandte Wissenschaften / 61 Medizin und Gesundheit / 610 Medizin und Gesundheit
Licence (German):License LogoCreative Commons - Namensnennung 4.0