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Comparison of radioactive and stable cesium uptake in aquatic macrophytes affected by the Fukushima Dai-ichi Nuclear Power Plant accident |
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| Authors: | Nagakawa Yoshiyasu Uemoto Michihisa Kurosawa Takahide Shutoh Kohtaroh Hasegawa Hiroshi Sakurai Noboru Harada Emiko |
| Institution: | 1.Biotechnology Group, Tokyo Metropolitan Industrial Technology Research Institute, 2-4-10, Aomi, Koto-ku, Tokyo, 135-0064, Japan ;2.School of Science and Engineering, Meisei University, 2-1-1, Hodokubo, Hino, Tokyo, 191-8506, Japan ;3.Faculty of Symbiotic Systems Science, Fukushima University, 1, Kanayagawa, Fukushima, 960-1296, Japan ;4.Faculty of Education, Niigata University, 2-8050, Ikarashi, Nishi-ku, Niigata, 950-2181, Japan ;5.School of Environmental Science, The University of Shiga Prefecture, 2500, Hassaka-cho, Hikone, Shiga, 522-8533, Japan ; |
| Abstract: | Concentrations of 134+137Cs and 133Cs in aquatic macrophytes, water, and sediment were measured in samples collected from Fukushima Prefecture, Japan. The concentrations of 137Cs in submerged and floating-leaved plants were higher than the values for emergent plants according to their main Cs uptake mode. The geometric mean water-to-plant concentration ratio for 137Cs and 133Cs was comparable observed in submerged and floating-leaved plants, while the geometric mean sediment-to-plant concentration ratio for 137Cs in emergent plants was higher than that of 133Cs, which suggest that the mobility of Fukushima accident-derived 137Cs is not in steady state 4–5 years after the accident. |
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