[MAG33-P11] Contribution of atmospheric Cs-137 concentration fluctuation and bioaerosol in Tsukuba, Ibaraki, 2013
In Namie Town, Fukushima, it is known that aerosol of biogenic origin was scattered in the summer, and from the observation of the scanning electron microscope (SEM) and the optical microscope, we found that the aerosol of this biological origin is fungi and spores like mushrooms and molds. Moreover, when this sample analyze DNA, many of them are basidiomycetes and ascomycetes. So it is considered that these spores are supplying Cs - 137 to the atmosphere, and it has been suggested that the bioaerosol contributes greatly to the re-scattering of radioactive materials.
Atmospheric aerosol in Tsukuba was thought to have scattered many carbonaceous aerosols such as black carbon. SEM and optical microscope analysis of air samples which radioactive materials are detected in trace amounts collected in Tsukuba in 2013, however, it has large amount of bioaerosol. So we consider whether scattering of Cs-137 concentrate is due to bioaerosol.