@article{oai:repo.qst.go.jp:00046873, author = {Hosoda, Masahiro and Tokonami, Shinji and Tazoe, Hirofumi and Sorimachi, Atsuyuki and Monzen, Satoru and Osanai, Minoru and Akada, Naofumi and Kakiuchi, Hideki and Omori, Yasutaka and Ishikawa, Tetsuo and Sarata, Kumar Sahoo and Kovacs, Tibor and Yamada, Masatoshi and Nakata, Akifumi and A, Yoshida Mitsuaki and Yoshino, Hironori and Mariya, Yasushi and Kashiwakura, Ikuo and 細田 正洋 and 床次 眞司 and 反町 篤行 and 大森 康孝 and 石川 徹夫 and サフー サラタ クマール and 山田 正俊}, journal = {Scientific Reports (Online Only URL:http://www.nature.com/srep/index.html)}, month = {Jul}, note = {Radionuclide concentrations in environmental samples such as surface soils, plants and water were evaluated by high purity germanium detector measurements. The contribution rate of short half-life radionuclides such as 132I to the exposure dose to residents was discussed from the measured values. The highest values of the 131I/137Cs activity ratio ranged from 49 to 70 in the environmental samples collected at Iwaki City which is located to the south of the F1-NPS. On the other hand, the 132I/131I activity ratio in the same environmental samples had the lowest values, ranging from 0.01 to 0.02. By assuming that the 132I/131I activity ratio in the atmosphere was equal to the ratio in the environmental samples, the percent contribution to the thyroid equivalent dose by 132I was estimated to be less than 2%. Moreover, the contribution to the thyroid exposure by 132I might be negligible if 132I contamination was restricted to Iwaki City.}, title = {Activity concentrations of environmental samples collected in Fukushima Prefecture immediately after the Fukushima nuclear accident}, volume = {3}, year = {2013} }