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Updated: Aug 24, 2026

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Published on: March 11, 2021
Radon variations during treatment in thermal spas of Lesvos Island (Greece)
Efstratios Vogiannis1, Dimitrios Nikolopoulos, Anna Louizi
1Department of Environmental Studies, University of the Aegean, 81100 Mytilene, Greece.
Abstract:
The aim of this paper was to study the variations of radon and daughter nuclei during treatment in the thermal spas of Lesvos Island (Greece). For this purpose, in the thermal spas of Lesvos we have measured the radon concentrations of thermal waters, as well as indoor radon, daughter and coarse particle (>500 nm) concentration. Various instruments and procedures were employed for measurements. Radon concentrations of thermal waters were found to lie in the range 10 and 304 Bq l(-1). Concentration peaks both for radon, radon daughter and coarse particle, were found to appear during filling of baths in the treatment process. The doses delivered to the bathers during treatment were in the range of 0.00670 mSv per year to 0.1279 mSv per year, while the doses delivered to personnel were below 20 mSv per year.
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