Radon in Tunisian buildings |
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Authors: | El May Michèle V Chahed Neila Hammou Azza Mtimet Sadok |
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Institution: | Centre National de Radio Protection, H?pital d'Enfants Place Bab Saadoun, Tunis. |
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Abstract: | Radon is a natural radioactive gas produced by decay of uranium and radium present in soils. Diluted in air, in confined atmospheres, it may accumulate in high concentrations. Inhalation of radon and its progeny is thought to increase lung cancer risk. For the first time, air radon concentrations were determined in 1151 dwellings situated in all the inhabited regions of Tunisia, using open alpha-track dosimeters exposed during two months. The median of 1864 measurements was 36 Bq m(-3) (with a maximum of 512 Bq m(-3), most of them being less than 100 Bq m(-3). All results were under the International Instances recommended range. |
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