*Zhang Yupan¹, Yuichi ONDA¹, Asahi HASHIMOTO¹, Chen-Wei CHIU², Takashi Gomi², Shodai INOKOSHI² (1.Center for Research on Isotopes and Environmental Dynamics, University of Tsukuba, 2.Department of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology)

*Asahi HASHIMOTO¹, Chen-Wei Chiu², Yuichi Onda³, Takashi Gomi² (1.College of Geoscience, University of Tsukuba, 2.Graduate School of AgricultureDepartment of International Environmental and Agricultural Science, Tokyo University of Agriculture and Technology, 3.Center for Research on Isotopes and Environmental Dynamics, University of Tsukuba)

*Karen Yamada^1,2, Arii Yasumoto^3,2, Naoya Katsuhama^4,2, Rimpei Katada^5,2, Shigeru Fujita^6,2, Asahi Hashimoto^7,2, Nobuyasu Naruse^8,2, Yukihiro Takahashi^9,2 (1.Tokyo Metropolitan Hakuo High School, 2.Super Scientist Program Plus, 3.College of Asia Pacific Studies, Ritsumeikan Asia Pacific University, 4.Graduate School of Agriculture, Forestry and Fisheries, Kagoshima University, 5.School of Agriculture, Meiji University, 6.Department of Veterinary Medicine, College of Bioresource Sciences, Nihon University, 7.College of Geoscience, University of Tsukuba, 8.Faculty of Medicine, Shiga University of Medical Science, 9.Graduate School of Science, Hokkaido University )

*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)