Abstract
Indoor radon concentration measurements were performed in dwellings of Ischia island (South Italy) using commercial E-Perm devices in LST configuration. The average concentrations in the dwellings were found to vary from 125 to 865 Bq/m3 with an average of 354 ± 176 Bq/m3. This value is higher than Italian National average that is 75 Bq/m3 and Campanian average that is 95 Bq/m3. Correlation between indoor radon concentration measurements and floor level of monitored room was also studied.
Highlights
Radon-222 and its progenies constitute the major source of natural ionizing radiation for general population
Indoor radon concentration measurements were performed in dwellings of Ischia island (South Italy) using commercial E-Perm devices in LST configuration
The average radon concentration for the monitored homes were higher than Italian National average that is 75 Bq/m3 [10] and Campanian average that is 95 Bq/m3 [11]
Summary
Radon-222 and its progenies constitute the major source of natural ionizing radiation for general population. Radon is considered to be the second leading cause of lung cancer after smoking and the World Health Organization [3] has established that the fraction of the lung cancer attributable to radon inhalation ranges from 3% to 14% depending on the average concentrations of the various countries and the methods of calculation. In order to limit the exposure to radon for general population, according to the Commission Recommendation 90/143/ Euratom [4], in EU countries it was established an action level of 400 Bq/m3, above which radon mitigation should be made in the homes that exceed this limit. Indoor radon concentration measurements in 58 dwellings of Ischia island are reported. Its territories was made up of both effusive (lava flow) and explosive volcanic products (green tuff, Citara tuff) whose composition is constituted mainly by trachybasalt to latite, trachyte, alkali-trachyte and phonolite [6]
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