Use of a size-resolved 1-D resuspension scheme to evaluate resuspended radioactive material associated with mineral dust particles from the ground surface.
J Environ Radioact
; 166(Pt 3): 436-448, 2017 Jan.
Article
en En
| MEDLINE
| ID: mdl-26872744
ABSTRACT
A size-resolved, one-dimensional resuspension scheme for soil particles from the ground surface is proposed to evaluate the concentration of radioactivity in the atmosphere due to the secondary emission of radioactive material. The particle size distributions of radioactive particles at a sampling point were measured and compared with the results evaluated by the scheme using four different soil textures sand, loamy sand, sandy loam, and silty loam. For sandy loam and silty loam, the results were in good agreement with the size-resolved atmospheric radioactivity concentrations observed at a school ground in Tsushima District, Namie Town, Fukushima, which was heavily contaminated after the Fukushima Dai-ichi Nuclear Power Plant accident in March 2011. Though various assumptions were incorporated into both the scheme and evaluation conditions, this study shows that the proposed scheme can be applied to evaluate secondary emissions caused by aeolian resuspension of radioactive materials associated with mineral dust particles from the ground surface. The results underscore the importance of taking soil texture into account when evaluating the concentrations of resuspended, size-resolved atmospheric radioactivity.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Suelo
/
Contaminantes Radiactivos del Suelo
/
Radioisótopos de Cesio
/
Accidente Nuclear de Fukushima
/
Modelos Teóricos
Tipo de estudio:
Risk_factors_studies
País/Región como asunto:
Asia
Idioma:
En
Revista:
J Environ Radioact
Asunto de la revista:
SAUDE AMBIENTAL
Año:
2017
Tipo del documento:
Article