کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8866136 | 1620873 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Estimation of 222Rn exhalation rate and assessment of radiological risk from activity concentration of 226Ra, 232Th and 40K
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
زمین شناسی اقتصادی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Estimation of 222Rn exhalation rate and assessment of radiological risk from activity concentration of 226Ra, 232Th and 40K Estimation of 222Rn exhalation rate and assessment of radiological risk from activity concentration of 226Ra, 232Th and 40K](/preview/png/8866136.png)
چکیده انگلیسی
The activity concentration of natural radionuclides and 222Rn (Radon) exhalation rate in soil samples were determined using NaI gamma detector and Scintillation based Smart Radon Monitor (SRM). Soil samples were collected from different geological formations of the same area. The concentration of three radionuclides (226Ra, 232Th and 40K) in the studied area has been varied from 25 Bq kgâ 1 to 48 Bq kgâ 1, 28 Bq kgâ 1 to 47 Bq kgâ 1 and 356 Bq kgâ 1 to 598 Bq kgâ 1 respectively. The average value of 226Ra (Radium) equivalent activity in soil samples of the studied area was 125 Bq kgâ 1. The 226Ra equivalent activities of soil samples have been calculated to assess the radiation hazards arising due to the use of these soils in the construction of dwellings. The exhalation of 222Rn from the earth's crust and building material are the main source of 222Rn in indoor environment. The 222Rn exhalation rate in the studied area was varied from 16.9 ± 0.5 mBq Kgâ 1 hâ 1 to 38.2 ± 0.9 mBq Kgâ 1 hâ 1. A weak correlation was obtained between the 226Ra and 222Rn exhalation rate. The annual effective doses for different organs and radiation hazards have been also calculated in the studied area. The overall average annual effective dose in the studied is lower than the world recommended value of 1.0 mSvaâ 1.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Geochemical Exploration - Volume 184, Part B, January 2018, Pages 304-310
Journal: Journal of Geochemical Exploration - Volume 184, Part B, January 2018, Pages 304-310
نویسندگان
Pargin Bangotra, Rohit Mehra, Rajan Jakhu, Kirandeep Kaur, Pragya Pandit, Sandeep Kanse,