2011 Fiscal Year Final Research Report
Development of the research method for earth's environmental fate byultra-trace radionuclide analysis using Accelerator Mass Spectrometry
Project/Area Number |
21310004
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Environmental dynamic analysis
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Research Institution | University of Tsukuba |
Principal Investigator |
SASA Kimikazu 筑波大学, 数理物質系, 准教授 (20312796)
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Co-Investigator(Kenkyū-buntansha) |
SUEKI Keisuke 筑波大学, 数理物質系, 准教授 (90187609)
TOSAKI Yuki 筑波大学, 生命環境系, 産業技術総合研究所, 助教, 特別研究員 (80533215)
OKI Toshiyuki 筑波大学, 高エネルギー加速器研究機構, 研究基盤総合センター, 加速器研究施設, 研究員, 助教 (60415049)
BESSHO Kotaro 高エネルギー加速器研究機構, 放射線科学センター, 准教授 (10300675)
MATSUMURA Hiroshi 高エネルギー加速器研究機構, 放射線科学センター, 准教授 (30328661)
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Co-Investigator(Renkei-kenkyūsha) |
NAGASHIMA Yasuo 筑波大学, 名誉教授 (60091914)
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Project Period (FY) |
2009 – 2011
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Keywords | 環境計測 / 加速器質量分析 / 地球環境変動 / 放射性核種 / 同位体分析 |
Research Abstract |
Accelerator Mass Spectrometry (AMS) is an ultra-sensitivetechnique for the study of long-lived radionuclides. We have developed the research methodfor earth's environmental fate by ultra-trace radionuclide analysis using AMS. In thisstudy, we have monitored36Cl in precipitation for a period more than 3 years in centralJapan. The long-term averaged^<36>Cl flux was estimated to be 32 ± 2 atoms m^<-2>s^<-1>. Weinvestigated the potential of^<36>Cl in tracing young groundwater with residence times ofup to 50 years. We measured^<36>Cl,^<129>I and^<137>Cs isotope ratios and inventories in surfacesoil samples in Japan. We have applied this research method to conduct an environmentalsurvey of radionuclides released from the Fukushima No. 1 nuclear power plant accident.
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[Journal Article] Firstassessment of individualradionuclides distributions from theFukushima nuclear accident coveringcentral-east Japan2011
Author(s)
Norikazu Kinoshita, Keisuke Sueki,Kimikazu Sasa, Jun-ichi Kitagawa,Satoshi Ikarashi, Tomohiro Nishimura,Ying-Shee Wong, Yukihiko Satou, KojiHanda, Tsutomu Takahashi, MasanoriSato, Takeyasu Yamagata
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Journal Title
Proceedings of theNational Academy of Sciences (PNAS)
Volume: vol.108, no.49
Pages: 19526-19529
DOI
Peer Reviewed
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[Journal Article] Ultra-traceanalysis of ^<36>Cl by accelerator massspectrometry: an interlaboratorystudy2011
Author(s)
S. Merchel, W. Bremser, V. Alfimov, M.Arnold1, G. Aumaitre, L. Benedetti, D.L. Bourles, M. Caffee, L. K. Fifield,R. C. Finkel, S. P. H. T. Freeman, M.Martschini, Y. Matsushi, D. H. Rood, K.Sasa, P. Steier, T. Takahashi, M.Tamari, S. G. Tims, Y. Tosaki, K.
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Journal Title
Analytical and BioanalyticalChemistry
Volume: 400
Pages: 3125-3132
DOI
Peer Reviewed
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[Journal Article] Status and research programs of themultinuclide accelerator massspectrometry system at the Universityof Tsukuba2010
Author(s)
Kimikazu Sasa, Tsutomu Takahashi, Yuki Tosaki, Yuki Matsushi, Keisuke Sueki,Michiko Tamari, Takahiro Amano,Toshiyuki Oki, Shozo Mihara, YoshihiroYamato, Yasuo Nagashima, Kotaro Bessho,Norikazu Kinoshita, Hiroshi Matsumura
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Journal Title
Nuclear Instruments andMethods in Physics Research B
Volume: 268
Pages: 871-875
DOI
Peer Reviewed
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[Journal Article] Measurement of cosmogenic ^<36>Cl in theDome Fuji ice core, Antarctica:Preliminary results for the LastGlacial Maximum and early Holocene2010
Author(s)
Kimikazu Sasa, Yuki Matsushi, YukiTosaki, Michiko Tamari, TsutomuTakahashi, Yasuo Nagashima, KazuhoHoriuchi, Hiroyuki Matsuzaki,Yasuyuki Shibata, MotohiroHirabayashi, Hideaki Motoyama
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Journal Title
Nuclear Instruments and Methods inPhysics Research B
Volume: 268
Pages: 1193-1196
DOI
Peer Reviewed
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[Presentation] 福島第一原子力発電所事故により放出された放射性ヨウ素129 の表層土壌分布2012
Author(s)
笹 公和, 末木 啓介, 北川 潤一, 高橋努, 沈 洪涛, 松村 万寿美, 安倍 聡美,佐藤 志彦, 木下 哲一, 山形 武靖, 松崎 浩之
Organizer
第13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
Year and Date
20120227-29
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[Presentation] Application ofCl-36 AMS to geo-environmentalsciences at the University of Tsukuba2009
Author(s)
K. Sasa, T. Takahashi, Y. Nagashima,Y. Tosaki, K. Sueki, Y. Takaya, N.Kinoshita, T. Amano, J. Kitagawa, K.Kurozumi, M. Matsumura, H. Matsumura,K. Bessho, Y. Matsushi
Organizer
3rd East Asian Symposium onAccelerator Mass Spectrometry(EA-AMS-3)
Place of Presentation
Xi'an AMS Center, Xi'an,China
Year and Date
20091019-22
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[Presentation] Progress of an accelerator massspectrometry system at the Tsukuba12UD Pelletron tandem accelerator2009
Author(s)
Kimikazu Sasa, Tsutomu Takahashi,Yasuo Nagashima, Yuki Tosaki, KeisukeSueki, Toshiyuki Oki, Takahiro Amano,Hiroshi Matsumura, Kotaro Bessho,Norikazu Kinoshita, Yuki Matsushi
Organizer
The 11th International Conference "HeavyIon Accelerator Technology - HIAT"
Place of Presentation
Venice, Italy
Year and Date
20090608-12
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