2022年6月24日
Radon Solubility and Diffusion in the Skin Surface Layer
International Journal of Environmental Research and Public Health
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- 巻
- 19
- 号
- 13
- 開始ページ
- 7761
- 終了ページ
- 7761
- 記述言語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.3390/ijerph19137761
- 出版者・発行元
- MDPI AG
In specific situations such as bathing in a radon spa, where the radon activity concentration in thermal water is far higher than that in air, it has been revealed that radon uptake via skin can occur and should be considered for more precise dose evaluation. The primary aim of the present study was to numerically demonstrate the distribution as well as the degree of diffusion of radon in the skin, with a focus on its surface layer (i.e., stratum corneum). We developed a biokinetic model that included diffusion theory at the stratum corneum, and measured radon solubility in that tissue layer as a crucial parameter. The implementation of the model suggested that the diffusion coefficient in the stratum corneum was as low as general radon-proof sheets. After a 20-min immersion in water, the simulated depth profile of radon in the skin showed that the radon activity concentration at the top surface skin layer was approximately 103 times higher than that at the viable skin layer. The information on the position of radon as a radiation source would contribute to special dose evaluation where specific target cell layers are assumed for the skin.
- リンク情報
- ID情報
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- DOI : 10.3390/ijerph19137761
- eISSN : 1660-4601