Natural radionuclide concentrations in thermal springs of east Algeria
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- 作者：Hadda Kebir ; Ahmed Boucenna
- 关键词：Gamma spectroscopy ; Activity concentrations ; Water sample ; Thermal springs ; Annual effective dose
- 刊名：Environmental Earth Sciences
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：76
- 期：1
- 全文大小：
- 刊物类别：Earth and Environmental Science
- 刊物主题：Geology; Hydrology/Water Resources; Geochemistry; Environmental Science and Engineering; Terrestrial Pollution; Biogeosciences;
- 出版者：Springer Berlin Heidelberg
- ISSN：1866-6299
- 卷排序：76
文摘
The variation of the natural radionuclide concentrations depends on the chemical composition of each site. In this work, two thermal springs in the east of Algeria have been chosen to assess the activity concentration of natural radionuclide, mainly the three natural radioactive series 238U, 235U and 232Th, and 40K. The high-resolution gamma ray spectroscopy was used to determine these concentrations. In these water samples, 235U, 234Th, 210Pb, 226Ra radionuclides are less than the minimum detectable activity. The activity of 238U is dominant. The 238U activity was determined by taking the mean activity of two separate photo-peaks of daughter nuclides 214Pb at 351.92 (37.2%) keV and 214Bi at 609.31 (45%) keV. The measured activity concentrations of 238U in water samples obtained from the concentrations of 214Bi and 214Pb ranged from 0.56 ± 0.20 to 1.13 ± 0.20 Bq/L. The annual effective dose value due to the ingestion of the measured radionuclide 238U in 1 L of water, for an adult, ranged from 9.20 to 18.56 µSv.