Maier, Andreas ; Jones, Jesse ; Sternkopf, Sonja ; Friedrich, Erik ; Fournier, Claudia ; Kraft, Gerhard (2022)
Radon Adsorption in Charcoal.
In: International Journal of Environmental Research and Public Health, 18 (9)
doi: 10.3390/ijerph18094454
Article, Bibliographie
This is the latest version of this item.
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.
| Item Type: | Article |
|---|---|
| Erschienen: | 2022 |
| Creators: | Maier, Andreas ; Jones, Jesse ; Sternkopf, Sonja ; Friedrich, Erik ; Fournier, Claudia ; Kraft, Gerhard |
| Type of entry: | Bibliographie |
| Title: | Radon Adsorption in Charcoal |
| Language: | English |
| Date: | 2022 |
| Publisher: | MDPI |
| Journal or Publication Title: | International Journal of Environmental Research and Public Health |
| Volume of the journal: | 18 |
| Issue Number: | 9 |
| Collation: | 7 Seiten |
| DOI: | 10.3390/ijerph18094454 |
| Corresponding Links: | |
| 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. |
| Uncontrolled Keywords: | radon, charcoal, adsorption, desorption |
| Classification DDC: | 500 Science and mathematics > 530 Physics |
| Divisions: | 05 Department of Physics 05 Department of Physics > Institute of Nuclear Physics |
| Date Deposited: | 02 Aug 2024 12:37 |
| Last Modified: | 02 Aug 2024 12:37 |
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| Suche nach Titel in: | TUfind oder in Google |
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Radon Adsorption in Charcoal. (deposited 02 Feb 2022 13:14)
- Radon Adsorption in Charcoal. (deposited 02 Aug 2024 12:37) [Currently Displayed]
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