Modelling the mitigation speeds of 137Cs, 90Sr and 131I in the topsoils and assessment of the radiological hazards

Autor:	Son Vi Xuan, Thang Nguyen Van, Thu Huynh Nguyen Phong, Hao Le Cong, Trong Tran Huu, Han Phan Thi Ngoc
Rok vydání:	2019
Předmět:	Topsoil Radionuclide education.field_of_study Health Toxicology and Mutagenesis Population Public Health Environmental and Occupational Health General Medicine Contamination Pollution Effective dose (radiation) Radiological weapon Environmental chemistry Soil water Soil horizon education
Zdroj:	Ecotoxicology and Environmental Safety. 169:216-224
ISSN:	0147-6513
Popis:	Fate modelling of artificial radionuclides (ARs) in top soils are necessary to assess the radiological effects to population. Among ARs, 137Cs, 90Sr and 131I are very important since the large abundances in the environment. In this study, the fates of 137Cs, 90Sr and 131I in the surface soil layers were simulated by the soil model which was developed by the Canadian Centre for Environmental Modelling and Chemistry (CEMC). The scenario that 137Cs, 90Sr and 131I contaminated in topsoil in the exclusion of Fukushima Daiichi nuclear power plant (NPP) accident was evaluated. The results show the expected time for the minimum hazardous level of exposure. It is 115.5 days after the exposure, when the total effective dose is 1 mSv y−1 in which 0.46 mSv y−1 from ingestion and 0.54 mSv y−1 from gamma exposure. Hazard levels due to exposure progresses are varied in order gamma exposure (82.14%) > ingestion (17.47%) > inhalation (0.39%). The hazard levels from radionuclides are varied in order 137Cs (63.34%) > 131I (33.48%) > 90Sr (3.18%).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::534cc0d71b9a6cb30e3775df199ad01c https://doi.org/10.1016/j.ecoenv.2018.11.013 Zobrazit plný text záznamu Full Text from ScienceDirect