Levels of 226Ra in some paddy soils in the Mekong Delta region (Vietnam): current status and long-term assessment
Van Thang Nguyen, Binh An Le, Nguyen Phong Thu Huynh & Cong Hao Le
Journal of Radioanalytical and Nuclear Chemistry (2021)
Abstract:
226Ra levels in rice, soil, fertilizers, and water samples were analysed in 16 paddy fields in the Mekong Delta region. Levels of this radionuclide in the rice ecosystems caused radiation doses below the limits due to radionuclides in foodstuffs recommended by ICRP. Long-term change of 226Ra in the soil was predicted by a combination of experimental and modelling methods based on balance between its input and loss rates in topsoil. Similar results were found based on different mathematical models. The long-term increase of 226Ra found in the topsoil has not significantly changed since it has been studied ten years ago.
More detail>>
