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Concentration of Radon, Thorn and their Progeny Levels in Different Location in Some Dwellings of Zubair City | ||
| Journal of College of Education for Pure Science | ||
| Article 1, Volume 2, Issue 2, 2012, Pages 48-58 | ||
| Abstract | ||
| Radon, thoron and their progenies are the most important contributions to human exposure from natural sources. Radon is a natural radioactivity gas without dour, color or taste, it comes from uranium decay. Uranium is a natural radioactivity material found in varying amounts in all rock, soil, concrete and bricks. This study assesses the indoor radon, thorn and their progeny in some dwelling in Zubair northwest of Basrah city by using Solid State Nuclear Track Detectors (SSNTD) type CN- 85. The value of concentration of radon ranges from 12.169 (Bq/m³) to 99.470 Bq/m³ and with an average 50.216 Bq/m³, where the value of thoron concentration ranges from 4.569 Bq/m³ to 35.729 Bq/m³ with an average 16.134 Bq / m³.The range of radon progeny and thorn progeny from 1.31 mWL to 10.75 mWL and from 1.66 mWL to 12.99 mWL respectively . The inhalation dose for radon and thorn (Rn + Tn) varies from 0.255 mSv/y to 2.067 mSv/y .The annual exposure to radon and thorn (Rn + Tn) in terms of WLM ranges from 0.106 to 0.854. The annual effective dose for radon and thorn (Rn + Tn) was ranges from 0.411 mSv/y to 3.88 mSv/y with an average value of 1.597 mSv/y. | ||
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