Understanding the distribution and migration process of Fukushima-derived plutonium isotopes in the environment.

• Project/Area Number: 24310002
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Hirosaki University
• Principal Investigator: YAMADA MASATOSHI 弘前大学, 被ばく医療総合研究所, 教授 (10240037)
• Co-Investigator(Kenkyū-buntansha): TAZOE Hirofumi 弘前大学, 被ばく医療総合研究所, 助教 (60447381)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000); Fiscal Year 2014: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2013: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000); Fiscal Year 2012: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
• Keywords: 環境計測 / 環境放射線（能） / 福島原発事故 / プルトニウム / 防護 / 福島第一原子力発電所事故 / 放射性セシウム / 放射性ストロンチウム / 福島第一原発事故 / 環境放射線(能)

Outline of Final Research Achievements

The activity ratio of 238Pu/239+240Pu is characteristic for the Pu emission source, information on the Pu isotopic signature is very useful to identify the sources of Pu in the environment. The objectives of this study were to measure the 238Pu/239+240Pu activity ratio in surface soil samples and to estimate the relative contribution of the global fallout Pu and the Fukushima-derived Pu.
The 238Pu/239+240Pu ratios in surface soil samples ranged from 0.03 to 1.27. Higher 238Pu/239+240Pu ratios than the value of 0.03 from the global stratospheric fallout were found. Higher ratios may prove the existence of Pu from the Fukushima Dai-ichi Nuclear Power Plant accident. The contribution of Pu from the Fukushima Dai-ichi Nuclear Power Plant accident can be estimated as a mixture of Pu from the global stratospheric fallout and Fukushima Dai-ichi Nuclear Power Plant. The relative percentage of Pu from the Fukushima accident was 42 % in soil sample of 238Pu/239+240Pu ratio of 1.27.

Research Products

• [Journal Article] Release of Pu isotopes from the Fukushima DNPP accident to the marine environment was negligible (2014)
  • Author(s): Bu, W.T., Fukuda, M., Zheng, J., Aono, T., Ishimaru, T., Kanda, J., Yang, G.S., Tagami, K., Uchida, S., Guo, Q.J., and Yamada, M.
  • Journal Title: Environmental Science and Technology Volume: 48（16） Issue: 16 Pages: 9078-9078
  • DOI: 10.1021/es502480y
  • Peer Reviewed / Open Access
• [Journal Article] Differences in remediation effect of 137Cs in Napiergrass (Pennisetum purpureum Schum.) under different land-use soil and cutting frequency conditions (2014)
  • Author(s): Kang, D.-J., H. Tazoe, M. Yamada, Y. Ishii
  • Journal Title: Water, Air, & Soil Pollution Volume: 225 Issue: 7 Pages: 1-10
  • DOI: 10.1007/s11270-014-2022-x
  • Peer Reviewed / Open Access
• [Journal Article] Distribution of radionuclides in surface seawater obtained by an aerial radiological survey (2014)
  • Author(s): Inomata, Y., Aoyama, M., Hirose, K., Sanada, Y., Torii, T., Tsubono, T., Tsumune, D., and Yamada, M.
  • Journal Title: Journal of Nuclear Science and Technology Volume: 51（9） Issue: 9 Pages: 1059-1063
  • DOI: 10.1080/00223131.2014.914451
  • Peer Reviewed / Open Access
• [Journal Article] Vertical distributions of radionuclides (239+240Pu, 240Pu/239Pu, 137Cs, 210Pb) in sediment cores of Lake Bosten in northwestern China. (2014)
  • Author(s): H. Q. Liao, W. T. Bu, J. Zheng, F. C. Wu, M. Yamada
  • Journal Title: Environmental Science and Technology Volume: 48 Issue: 7 Pages: 3840-3846
  • DOI: 10.1021/es405364m
  • Peer Reviewed
• [Journal Article] Ultra-trace determination of plutonium in small volume (2014)
  • Author(s): Bu, W., Zheng, J., Guo, Q. J., Aono, T., Tagami, K., Uchida, S., Tazoe, H., and Yamada, M.
  • Journal Title: Journal of Chromatography A Volume: 1337 Pages: 171-178
  • DOI: 10.1016/j.chroma.2014.02.066
  • Peer Reviewed / Open Access
• [Journal Article] A method of measurement of 239Pu, 240Pu, 241Pu in high U content marine sediments by sector field ICP-MS and its application to Fukushima sediment samples (2014)
  • Author(s): Bu, W., Zheng, J., Guo, Q. J., Aono, T., Tazoe, H., Tagami, K., Uchida, S., and Yamada, M.
  • Journal Title: Environmental Science Technology Volume: 48 Issue: 1 Pages: 534-541
  • DOI: 10.1021/es403500e
  • Peer Reviewed / Open Access
• [Journal Article] Activity concentrations of environmental samples collected in Fukushima Prefecture immediately after the Fukushima nuclear accident. (2013)
  • Author(s): M. Hosoda, S. Tokonami, H. Tazoe, A. Sorimachi, S. Monzen, M. Osanai, N. Akata, H. Kakiuchi, Y. Omori, T. Ishikawa, S. K. Sahoo, T. Kovacs, M. Yamada, A. Nakata, M. Yoshida, H. Yoshino, Y. Mariya, I. Kashiwakura.
  • Journal Title: Scientific Reports Volume: 3:2283 Issue: 1 Pages: 1-6
  • DOI: 10.1038/srep02283
  • Peer Reviewed
• [Journal Article] Radioactive pollution from Fukushima Daiichi nuclear power plant in the terrestrial environment (2012)
  • Author(s): H. Tazoe, M. Hosoda, A. Sorimachi, A. Nakata, M. A. Yoshida, S. Tokonami, M. Yamada
  • Journal Title: Radiation Protection Dosimetry Volume: 152 Issue: 1-3 Pages: 198-203
  • DOI: 10.1093/rpd/ncs222
  • Peer Reviewed
• [Journal Article] Concentration of 3H in plants around Fukushima Dai-ichi Nuclear Power Station. (2012)
  • Author(s): Kakiuchi, H, N. Akata, H. Hasegawa, S. Ueda, S. Tokonami, M. Yamada, M. Hosoda, A. Sorimachi, H. Tazoe, K. Noda and S. Hisamatsu
  • Journal Title: Scientific Reports Volume: 2 Issue: 1 Pages: 1-3
  • DOI: 10.1038/srep00947
  • Peer Reviewed
• [Journal Article] Environmental radiation in Fukushima after the nuclear power station accident. (2012)
  • Author(s): Masahiro Hosoda, Shinji Tokonami, Atsuyuki Sorimachi, Satoru Monzen, Minoru Osanai, Masatoshi Yamada, Ikuo Kashiwakura, and Suminori Akiba
  • Journal Title: The proceedings of the 3rd International Symposium on Radiation Emergency Medicine at Hirosaki University Pages: 5-10
• [Journal Article] Investigating plutonium contamination in marine sediments off Fukushima coast following the Fukushima Dai-ichi Nuclear Power Plant accident. (2012)
  • Author(s): Wenting Bu, Jian Zheng, Tatsuo Aono, Keiko Tagami, Shigeo Uchida, Jing Zhang, Qiuju Guo and Masatoshi Yamada
  • Journal Title: Proceedings of International Symposium on environmental monitoring and dose estimation or residents after accident of TEPCO's Fukushima Daiichi Nuclear Power Stations Pages: 141-145
• [Presentation] 福島県浪江町警戒区域内におけるネピアグラスによる放射性セシウム除染 第１報 異なる栽植密度と刈取り回数による放射性セシウム除染効果 (2015)
  • Author(s): 姜東鎮、磯部勝孝、肥後昌男、田副博文、細田正洋、石井康之、床次眞司、山田正俊
  • Organizer: 第239回日本作物学会春季講演会
  • Place of Presentation: 日本大学（神奈川県藤沢市）
  • Year and Date: 2015-03-27 – 2015-03-28
• [Presentation] 原発事故により放出された放射性物質の海洋における動態 (2015)
  • Author(s): 山田正俊
  • Organizer: 震災から４年を迎えるにあたって-シンポジウム「放射線と環境・食の安全」
  • Place of Presentation: 東京大学（東京都文京区）
  • Year and Date: 2015-03-14
  • Invited
• [Presentation] 放射性物質汚染地域に生息する動物における放射線影響研究 (2015)
  • Author(s): 三浦富智，中田章史，藤嶋洋平，阿部悠，氏家里紗，葛西宏介，田副博文，有吉健太郎，齋藤幹男，鈴樹亨純，山田正俊，吉田光明，福本学
  • Organizer: 第1回保健科学研究発表会
  • Place of Presentation: 弘前大学（青森県弘前市）
  • Year and Date: 2015-02-21
• [Presentation] Understanding of the distribution of radioactive materials in sea and seafloor sediment (2015)
  • Author(s): Masatoshi Yamada
  • Organizer: International Symposium of Interdisciplinary Study on Environmental Transfer of Radionuclides from the Fukushima Daiichi NPP Accident
  • Place of Presentation: 筑波大学（茨城県つくば市）
  • Year and Date: 2015-01-09 – 2015-01-10
• [Presentation] 239Pu and 240Pu inventories in the South China Sea water column (2014)
  • Author(s): Masatoshi Yamada, Jian Zheng, Tatsuo Aono
  • Organizer: International Conference of Asian Environmental Chemistry 2014
  • Place of Presentation: Bangkok (Thailand)
  • Year and Date: 2014-11-24 – 2014-11-26
• [Presentation] 放射性物質汚染地域に生息するアカネズミの生物影響解析 (2014)
  • Author(s): 三浦富智，中田章史，藤嶋洋平，氏家里紗，葛西宏介，田副博文，有吉健太郎，齋藤幹男，鈴樹亨純，山田正俊，吉田光明，福本学
  • Organizer: 日本放射線影響学会第57回大会
  • Place of Presentation: 鹿児島大学（鹿児島県鹿児島市）
  • Year and Date: 2014-10-01 – 2014-10-03
• [Presentation] 海洋における放射性物質の実態に迫るー福島原発事故その後ー (2014)
  • Author(s): 山田正俊
  • Organizer: 2014年度第2回松前重義記念基金セミナー
  • Place of Presentation: 東海大学（静岡県静岡市）
  • Year and Date: 2014-10-01
  • Invited
• [Presentation] Radiation dosimetry for the internal exposure of the cats in the Namie-Town (2014)
  • Author(s): Fujishima Y., Nakata A., Miura T., Tazoe H., Toyoda T., Kasai K., Ariyoshi K., Yamada M., Konno N., Yoshida MA
  • Organizer: 1st Educational Symposium on Radiation and Health by young scientists (ESRAH20104)
  • Place of Presentation: ホテルニューキャッスル（青森県弘前市）
  • Year and Date: 2014-09-21 – 2014-09-22
• [Presentation] 福島原発事故直後の室内外における放射性核種測定 (2014)
  • Author(s): 反町篤行, 石川徹夫, 床次眞司, 岡光昭, 細田正洋, 田副博文, 山田正俊, 柏倉幾郎
  • Organizer: 第55回大気環境学会年会
  • Place of Presentation: 愛媛大学（愛媛県松山市）
  • Year and Date: 2014-09-17 – 2014-09-19
• [Presentation] 福島第一原子力発電所事故により放出された放射性核種の海水・沈降粒子・海底堆積物における分布の実態 (2014)
  • Author(s): 山田正俊
  • Organizer: 2014年度日本地球化学会第61回年会
  • Place of Presentation: 富山大学（富山県富山市）
  • Year and Date: 2014-09-16 – 2014-09-18
  • Invited
• [Presentation] 福島第一原子力発電所近海における表層海水中の90Sr濃度分布 (2014)
  • Author(s): 田副博文、山形武靖、増田雄基、永井尚生、山田正俊
  • Organizer: 2014年度日本地球化学会第61回年会
  • Place of Presentation: 富山大学（富山県富山市）
  • Year and Date: 2014-09-16 – 2014-09-18
• [Presentation] Transport process of Pu isotope in marginal seas of the western North Pacific Ocean (2014)
  • Author(s): Masatoshi Yamada, Jian Zheng
  • Organizer: International Conference on Radioecology and Environmental Radioactivity 2014
  • Place of Presentation: Barcelona (Spain)
  • Year and Date: 2014-09-07 – 2014-09-12
• [Presentation] A state and problem in 137Cs contamination in the marine biota along the Pacific coast of eastern Japan derived from the dynamic biological model simulation after the Fukushima accident (2014)
  • Author(s): Yuzuru Tateda, Daisuke Tsumune, Takaki Tsubono, Tsuyoshi Yoshimura, Kazuhiro Misumi, Masatoshi Yamada, Jota Kanda, Takashi Ishimaru
  • Organizer: International Conference on Radioecology and Environmental Radioactivity 2014
  • Place of Presentation: Barcelona (Spain)
  • Year and Date: 2014-09-07 – 2014-09-12
• [Presentation] DGAレジンを用いたイットリウム迅速分離によるストロンチウム-90の定量―土壌および水試料への適用－ (2014)
  • Author(s): 田副博文、山形武靖、小畑元
  • Organizer: 第２３回環境化学討論会
  • Place of Presentation: 京都大学（京都府京都市）
  • Year and Date: 2014-05-14 – 2014-05-16
• [Presentation] 航空機モニタリングによる福島沿岸域における放射性核種の分布 (2014)
  • Author(s): 猪股弥生，青山道夫，廣瀬勝巳，眞田幸尚，鳥居建男，坪野考樹，津旨大輔，山田正俊
  • Organizer: 地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] キレート樹脂DGAレジンを用いたイットリウム迅速分離と海水中Sr-90 定量への適用 (2014)
  • Author(s): 田副博文、山形武靖、小畑元、山田正俊
  • Organizer: 地球惑星科学連合2014年大会
  • Place of Presentation: パシフィコ横浜（神奈川県横浜市）
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] Distribution of radionuclides in the surface sea water developed by aerial radiological survey (2014)
  • Author(s): Inomata, Y., M. Aoyama, K. Hirose, Y. Sanada, T. Torii, T. Tsubono, D. Tsumune, and M. Yamada
  • Organizer: European Geosciences Union General Assembly 2014
  • Place of Presentation: Vienna (Austria)
  • Year and Date: 2014-04-27 – 2014-05-02
• [Presentation] プルトニウム同位体の海洋循環とPFOS類との比較 (2014)
  • Author(s): 山田正俊
  • Organizer: 2014年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学（東京都）
• [Presentation] Pu distribution in the marine sediments within the 30km zone around the Fukushima Daiichi nuclear power plant site (2014)
  • Author(s): W. T. Bu, M. Fukuda, J. Zheng, T. Aono, K. Tagami, S. Uchida, T. Ishimaru, J. Kanda, Q. J. Guo, M. Yamada
  • Organizer: 第１５回環境放射能研究会
  • Place of Presentation: 高エネルギー加速器研究機構（つくば市）
• [Presentation] 福島沖におけるSr-90の表層濃度分布 (2014)
  • Author(s): 田副 博文、山形武靖、辻田一樹、永井尚生、小畑元、神田穣太、山田正俊
  • Organizer: 第１５回環境放射能研究会
  • Place of Presentation: 高エネルギー加速器研究機構（つくば市）
• [Presentation] Pu isotope in water column of the Sulu Sea (2014)
  • Author(s): M. Yamada, J. Zheng, T. Aono
  • Organizer: 2014 Ocean Sciences Meeting
  • Place of Presentation: Honolulu(USA)
• [Presentation] Vertical distribution of Pu isotopes in marine sediments off the Fukushima coast after the FDNPP accident. (2013)
  • Author(s): W. Bu, J. Zheng, T. Aono, K. Tagami, S. Uchida, J. Zhang, Q. Guo and M.Yamada
  • Organizer: 2013年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学
  • Year and Date: 2013-03-24
• [Presentation] 東電福島第一原子力発電所事故後の海洋堆積物中のPuについて (2013)
  • Author(s): 鄭建、ト文庭、青野辰雄、郭秋菊、田上恵子、内田滋夫、山田正俊
  • Organizer: 2013年度日本地球化学会第60回年会
  • Place of Presentation: 筑波大学（つくば市）
• [Presentation] 福島第一原発近海の放射性ストロンチウムの分布 (2013)
  • Author(s): 田副博文、山形武靖、辻田一樹、永井尚生、小畑元、山田正俊
  • Organizer: 2013年度日本海洋学会秋季大会
  • Place of Presentation: 北海道大学（札幌市）
• [Presentation] Determination of Strontium-90 in Seawater Using TODGA Chelating Resin (2013)
  • Author(s): Hirofumi Tazoe, Takeyasu Yamagata, Hajime Obata, Masatoshi Yamada
  • Organizer: The 23rd V. M. Goldschmidt Conference
  • Place of Presentation: Firenze Fiera congress centre (Italy, Florence)
• [Presentation] 北部北太平洋海水柱中におけるプルトニウム同位体の存在量の変化 (2013)
  • Author(s): 山田正俊、鄭建、青野辰雄
  • Organizer: 2013年度日本海洋学会秋季大会
  • Place of Presentation: 北海道大学（札幌市）
• [Presentation] 土壌中の放射能比分析による福島第一原子力発電所事故由来のプルトニウムの飛散状況の把握 (2013)
  • Author(s): 山口朋子、山田正俊、田副博文、葛西宏介、中田章史、細川洋一郎
  • Organizer: 平成25年度青森県診療放射線技師学術大会
  • Place of Presentation: 弘前大学（弘前市）
• [Presentation] Pu-239 and Pu-240 inventories and Pu-240/ Pu-239 atom ratios in the water column off Sanriku (2013)
  • Author(s): M. Yamada, J. Zheng, T. Aono
  • Organizer: European Geosciences Union General Assembly 2013
  • Place of Presentation: Vienna(Austria)
• [Presentation] Distribution of Pu-240/Pu-239 atom ratios in the surface seawaters of the North Pacific Ocean and its adjacent seas. (2013)
  • Author(s): M. Yamada, J. Zheng, T. Aono
  • Organizer: The 10th Annual Meeting of Asia Oceania Geoscience Society
  • Place of Presentation: Brisbane(Australia)
• [Presentation] Pu isotope in water column of the Sea of Okhotsk (2013)
  • Author(s): M. Yamada, J. Zheng, T. Aono
  • Organizer: The 23rd V. M. Goldschmidt Conference
  • Place of Presentation: Firenze Fiera congress centre (Italy, Florence)
• [Presentation] Investigating plutonium contamination in marine sediments off Fukushima coast following the Fukushima Dai-ichi Nuclear Power Plant accident. (2012)
  • Author(s): W. Bu, J. Zheng, T. Aono, K. Tagami, S. Uchida, J. Zhang, Q. Guo and M. Yamada
  • Organizer: International Symposium on environmental monitoring and dose estimation of residents after accident of TEPCO's Fukushima Daiichi Nuclear Power Stations
  • Place of Presentation: 京都大学
  • Year and Date: 2012-12-14
• [Presentation] Examination of the environmental radiation measurement technique in nuclear Disaster. (2012)
  • Author(s): Masahiro Hosoda, Shinji Tokonami, Atsuyuki Sorimachi, Hirofumi Tazoe, Masatoshi Yamada, Satoru Monzen, Minoru Osanai, Hironori Yoshino, Ikuo Kashiwakura
  • Organizer: The 4th International Symposium on Radiation Emergency Medicine in Hirosaki University
  • Place of Presentation: 弘前大学
  • Year and Date: 2012-09-30
• [Presentation] 福島県における放射性エアロゾルの粒径分布測定 (2012)
  • Author(s): 反町篤行、岡光昭、細田正洋、田副博文、床次眞司、山田正俊、柏倉幾郎
  • Organizer: 第53回大気環境学会年会
  • Place of Presentation: 神奈川大学
  • Year and Date: 2012-09-13
• [Presentation] Determination of Pu isotopes and Am-241 in seawater, settling particles and marine sediments from the Okinawa Trough. (2012)
  • Author(s): Masatoshi Yamada, Jian Zheng
  • Organizer: 2012 Asia-Pacific Winter Conference on Plasma Spectrochemistry
  • Place of Presentation: 済州島(韓国)
  • Year and Date: 2012-08-27
• [Presentation] 福島県における放射性エアロゾルの室内外調査 (2012)
  • Author(s): 反町篤行、床次眞司、細田正洋、田副博文、山田正俊
  • Organizer: 日本保健物理学会第45回研究発表会
  • Place of Presentation: 名古屋大学
  • Year and Date: 2012-06-16
• [Book] 同位体環境分析 (2013)
  • Author(s): 山田正俊、秋山賢一郎、天川裕史、海老原充、蒲生俊敬、岸本充生、伊永隆史、佐々木康人、谷保佐知、高橋純一、中山典子、野津憲治、平田岳史、堀井勇一、馬淵久夫、宮崎章、山下信義、吉永淳
  • Total Pages: 331
  • Publisher: 丸善出版株式会社