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- W3191301711 abstract "Water supply to the extreme north of Madagascar comes from the Amber Mountain catchment. The objectives of this work are to study the presence of natural radionuclides in the waters from the mountain catchment and investigate their origin by determining the radioactivity levels in water and soil, and their transfer factors. Forty samples were collected from various locations at the study site including 13 of water and 27 of soils. The results for the water samples show that 40 K, 238 U series and 232 Th series activities vary, respectively from 2.7 to 19.8 Bq.l −1 , 1.7 to 8.2 Bq.l −1 and 0.4 to 3.3 Bq.l −1 . For soil samples, the activities are in the range of 126 to 327 Bq.kg −1 , 14 to 73 Bq.kg −1 and 10 to 402 Bq.kg −1 , respectively for the 40 K, the 238 U series and the 232 Th series. Regarding the radionuclide soil-water transfer factors, the mean values for the whole study site are 0.04 for 40 K, 0.10 for 238 U series and 0.03 for 232 Th series. These results show that the Amber Mountain catchment soil radionuclides migrate weakly to the water system and their activities vary widely from one place to another. This low level of migration is explained by the geochemical behavior and the physico-chemical properties of the radionuclides present in the area." @default.
- W3191301711 created "2021-08-16" @default.
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- W3191301711 date "2021-09-01" @default.
- W3191301711 modified "2023-09-26" @default.
- W3191301711 title "Study of water radioactivity transfer from telluric origin in the Amber Mountain, Antsiranana, Madagascar" @default.
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- W3191301711 doi "https://doi.org/10.1016/j.sciaf.2021.e00902" @default.
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