[1I09-12] Biological Effects

[1I09] Migration in environment and microscopic analysis of the particle containing high concentration of radioactive cesium present in Fukushima

*Genki Furuki¹, Junpei Imoto¹, Asumi Ochiai¹, Shinya Yamasaki², Kenji Nanba³, Toshihiko Ohnuki⁴, Bernd Grambow⁵, Rodney C Ewing⁶, Satoshi Utsunomiya¹ (1.Kyushu University Department of Chemistry, 2.Facalty of Pure and Applied Sciences and Center for Research in Isotopes and Environmental Dynamics, Tsukuba University, 3.Department of Environmental Management Faculty of Symbiotic System Science, Fukushima University, 4.Tokyo Institute of Technology Institute of Innovative Research Laboratory for advanced Nuclear Energy, 5.SUBATECH, the University and Ecole des Mines of Nantes and CNRS, 6.Department of Geological Sciences and Center for International Security and Cooperaion Stanford University)

Keywords:the particle containing high concentration of radioactive cesium

熊川河口堆積物、河川流域表層土壌から福島第一原発由来の高濃度放射性セシウム含有微粒子(CsMP)を単離し、原子スケールで解析したところ、内部組織は他のCsMPと同様にFe-Zn酸化物ナノ粒子の凝集体がSiO2のマトリックスに覆われていた。河川流域と河口堆積物で同様の粒子が検出されたことから、CsMPの表層における動態が明らかになり、その後の海洋への流出が示唆された。