*Yuichi Onda¹, Bin Feng¹, Yoshifumi Wakiyama², Keisuke Taniguchi³, Asahi HASHIMOTO¹, Zhang Yupan¹ (1.Center for Research on Isotopes and Environmental Dynamics, University of Tsukuba, 2.Institute of Radioactivity, Fukushima University, 3.National Institute of Technology, Tsuyama College)

*Honoka Kurosawa¹, Kenji Nanba^2,3, Toshihiro Wada², Yoshifumi Wakiyama² (1.Major of Environmental Radioactivity, Graduate school of Symbiotic System Science and Technology, Fukushima University, 2.Institute of Environmental Radioactivity, Fukushima University, 3.Faculty of Symbiotic System Science, Fukushima University)

*Yoshifumi Wakiyama¹, Takuya Niida², Hyoe Takata¹, Keisuke Taniguchi³, Kazuki Fujita⁴, Alexei Konoplev¹, Yuichi Onda⁵ (1.Institute of Environmental Radioacitivity, Fukushima Universiy, 2.KANSO TECHNOS, CO. LTD., 3.National Institute of Technology, Tsuyama College, 4.Fukushima Prefectural Centre for Environmental Creation, 5.Center for Research in Isotope and Environmental Dynamics, University of Tsukuba)