Determination of Elemental Partition Coefficient for Siderophile Elements by Femtosecond Laser Ablation-ICP-Mass Spectrometry

• Project/Area Number: 18204052
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Geochemistry/Astrochemistry
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: HIRATA Takefumi Tokyo Institute of Technology, 大学院・理工学研究科, 准教授 (10251612)
• Co-Investigator(Kenkyū-buntansha): HIROSE Kei 東京工業大学, 大学院・理工学研究科, 教授 (50270921) ; EMORI Hiroyuki 秀明大学, 総合経営学部, 准教授 (30262257)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥49,140,000 (Direct Cost: ¥37,800,000、Indirect Cost: ¥11,340,000); Fiscal Year 2008: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000); Fiscal Year 2007: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2006: ¥42,900,000 (Direct Cost: ¥33,000,000、Indirect Cost: ¥9,900,000)
• Keywords: 同位体 / フェムト秒レーザー / ICP質量分析計 / 金属試料 / 鉱床試料 / 局所白金属元素分析 / 超高圧実験 / 元素分配 / 元素イメージング / 質量分析法 / フェムトレーザー / 微量元素 / 金属元素分配係数 / 超高圧

Research Abstract

地球や隕石母天体中での金属核(コア)の形成と進化を明らかにするためには、金属元素(親鉄性元素)の分配挙動を調べることが重要となる。そこで本研究では、フェムト秒レーザーを用いた次世代レーザーアブレーション試料導入法を設計・制作するとともに、既存装置である超高感度質量分析法(ICP質量分析法)への結合を行った。フェムト秒レーザーでは、従来のレーザーと比較して5-10万倍のエネルギー密度(W/cm2)が得られるため、金属・半導体試料のような熱拡散速度の速い試料に対しても安定した掘削・エアロゾル化が可能であることがわかった。その一方で、フェムト秒レーザーでは試料のエアロゾル化過程が従来のナノ秒レーザーとは異なることも明らかとなり、従来の試料セルおよびエアロゾル輸送機構では分析元素信号が不安定になるという問題もわかった。本研究ではヘリウムをキャリアーガスとして利用する新型セル形状を設計・製作するとともに、レーザー照射条件の最適化を図り、金属元素からも安定かつ再現性の高い分析データを得ることが可能となった。本研究で開発したレーザー試料導入装置をICP質量分析法に組み合わせ、いくつかの隕石試料から微量元素分析を行い、ケイ酸塩相と金属相間での分配係数を決定した。ニッケル、レニウム、オスミウムに関しては文献値と調和的な値が得られたが、一方でタングステンに関しては隕石間で有意な差があった。これは隕石母天体形成過程で物理化学状態が変化した可能性を示唆する。本研究を通じて得られた研究成果は、4つの国際学会で招待講演として発表し、国内外の研究者から高い評価を受けた。

Research Products

• [Journal Article] Precise Isotopic Analysis of Mo in Seawater Using MC-ICP-MS Coupled with a Chelating Resin Column Preconcentration Method (2009)
  • Author(s): Y. Nakagawa, M. Firdaus, K. Norisuye, Y. Sohrin, K. Irisawa, T. Hirata
  • Journal Title: Analytical Chemistry (accepted)
  • Peer Reviewed
• [Journal Article] Reworking of Hadean crust in the Acasta gneisses, 1 northwestern Canada : Evidence from in-situ Lu-Hf isotope analysis of zircon (2009)
  • Author(s): T. Iizuka, T. Komiya, S. P. Johnson, Y.Kon, S. Maruyama, T. Hirata
  • Journal Title: Chemical Geology (accepted)
  • Peer Reviewed
• [Journal Article] Development of in-situ Brillouin spectroscopy at high pressure and temperature with synchrotron radiation and infrared laser heating system : Application to the Earth's deep interior (2009)
  • Author(s): M. Murakami, Y. Asahara, Y. Ohishi, N.Hirao, K. Hirose
  • Journal Title: Physics of the Earth and Planetary Interiors (in press)
  • Peer Reviewed
• [Journal Article] Elasticity of MgO to 130 GPa : Implications for lower mantle mineralogy (2009)
  • Author(s): M. Murakami, Y. Ohishi, N. Hirao, K. Hirose
  • Journal Title: Earth and Planetary Science Letters 277
  • Peer Reviewed
• [Journal Article] Determination of post-perovskite phase transition boundary in MgSiO3 up to 4400 K and implications for thermal structure at the base of the mantle (2009)
  • Author(s): S. Tateno, K. Hirose, N. Sata, Y. Ohishi
  • Journal Title: Earth and Planetary Science Letters 277 Pages: 130-136
  • Peer Reviewed
• [Journal Article] Experimental study of reaction between perovskite and molten iron to 146 GPa and implications for chemical equilibrium at the core-mantle boundary (2009)
  • Author(s): H. Ozawa, K. Hirose, M. Mitome, Y. Bando, N. Sata, Y. Ohishi
  • Journal Title: Physics and Chemistry of Minerals (in press)
  • Peer Reviewed
• [Journal Article] Phase relations of iron-silicon alloys at high pressure and high temperature (2009)
  • Author(s): Y. Kuwayama, T. Sawai, K. Hirose, N. Sata, Y. Ohishi
  • Journal Title: Physics and Chemistry of Minerals (in press)
  • Peer Reviewed
• [Journal Article] Evaluation of analytical capability of NIR femtosecond laser ablation-inductively coupled plasma mass spectrometry (2008)
  • Author(s): T. Hirata, Y. KonEvaluation of analytical capability of NIR femtosecond laser ablation-inductively coupled plasma mass spectrometry
  • Journal Title: Analytical Sciences 24 Pages: 345-353
  • NAID: 10021098927
  • Peer Reviewed
• [Journal Article] In situ Cu isotope analysis of copper-rich materials by near-IR femtosecond laser ablation (2008)
  • Author(s): K. Ikehata, T. Hirata, K. Notsu
  • Journal Title: J. Anal. Atom. Spectrom 23 Pages: 1003-1008
  • Peer Reviewed
• [Journal Article] Evolution of the composition of seawater through geologic time, and its influence on the evolution of life (2008)
  • Author(s): T. Komiya, T. Hirata, K. Kitajima, S. Yamamoto, T. Shibuya, Y. Sawaki, T. Ishikawa, D. Shu, Y. Li, J. Han
  • Journal Title: Gondwana Research 14 Pages: 159-174
  • Peer Reviewed
• [Journal Article] Ca isotopic compositions of dolomite, phosphorite and the oldest animal embryo fossils from the Neoproterozoic in Weng'an, South China (2008)
  • Author(s): T. Komiya, A. Suga, T. Ohno, J. Han, J. Guo, S. Yamamoto, T. Hirata, Y. Li
  • Journal Title: Gondwana Research 14 Pages: 209-218
  • Peer Reviewed
• [Journal Article] Determination of ^<88>Sr/^<86>Sr mass-dependent isotopic fractionation and radiogenic isotope variation of ^<87>Sr/^<86>Sr in the Neoproterozoic Doushantuo Formation (2008)
  • Author(s): T. Ohno, T. Komiya, Y. Ueno, T. Hirata, S. Maruyama
  • Journal Title: Gondwana Research 14 Pages: 126-133
  • Peer Reviewed
• [Journal Article] Sr isotope excursion around Precambrian-Cambrian boundary, in Three Gorge area, South China (2008)
  • Author(s): Y. Sawaki, Y. Fukushi, T. Ohno, T. Komiya, T. Ishikawa, T. Hirata, S. Maruyama
  • Journal Title: Gondwana Research 14 Pages: 134-147
  • Peer Reviewed
• [Journal Article] Internal structures and UPb ages of zircons from a tuff layer in the Meishucunian formation, Yunnan Province, South China (2008)
  • Author(s): Y. Sawaki, M. Nishizawa, T. Suo, T. Komiya, T. Hirata, N. Takahata, Y. Sano, J. Han, Y. Kon, S. Maruyama
  • Journal Title: Gondwana Research 14 Pages: 148-158
  • Peer Reviewed
• [Journal Article] Isotopic analysis of calcium in blood plasma and bone from mouse samples by multiple collector-ICP-mass spectrometry (2008)
  • Author(s): T. Hirata, M. Tanoshima, A. Suga, Y. Tanaka, Y. Nagata, A. Shinohara, M. Chiba
  • Journal Title: Analytical Sciences 24 Pages: 1501-1507
  • NAID: 10025208434
  • Peer Reviewed
• [Journal Article] Simultaneous volume measurements of perovskite and post-perovskite in MgSiO3 and their thermal equations of state (2008)
  • Author(s): T. Komabayashi, K. Hirose, E. Sugimura, N. Sata, Y. Ohishi, L. Dubrovinsky
  • Journal Title: Earth and Planetary Science Letters 265 Pages: 515-524
  • Peer Reviewed
• [Journal Article] New high-pressure B2 phase of FeS above 180 GPa (2008)
  • Author(s): N. Sata, H. Ohfuji, K. Hirose, H. Kobayashi, Y. Ohishi, N. Hirao
  • Journal Title: American Mineralogist 93 Pages: 492-494
  • Peer Reviewed
• [Journal Article] Phase transitions in pyrolite and MORB at lowermost mantle conditions : Implications for a MORB-rich pile above the core-mantle boundary (2008)
  • Author(s): K. Ohta, K. Hirose, T. Lay, N. Sata, Y. Ohishi
  • Journal Title: Earth and Planetary Science Letters 267 Pages: 107-117
  • Peer Reviewed
• [Journal Article] Dissociation of CAS phase in the uppermost lower mantle (2008)
  • Author(s): K. Ishibashi, K. Hirose, N. Sata, Y. Ohishi
  • Journal Title: Physics and Chemistry of Minerals 35 Pages: 197-200
  • Peer Reviewed
• [Journal Article] Chemical equilibrium between ferropericlase and molten iron to 134 GPa and implications for iron content at the bottom of the mantle (2008)
  • Author(s): H. Ozawa, K. Hirose, M. Mitome, Y. Bando, N. Sata, Y. Ohishi
  • Journal Title: Geophysical Research Letters 35, L05308
  • Peer Reviewed
• [Journal Article] The electrical conductivity of post-perovskite in Earth's D (2008)
  • Author(s): K. Ohta, S. Onoda, K. Hirose, R. Sinmyo, K. Shimizu, N. Sata, Y. Ohishi, A. Yasuhara
  • Journal Title: layer, Science 320 Pages: 89-91
  • Peer Reviewed
• [Journal Article] Simultaneous volume measurements of Au and MgO to 140 GPa and thermal equation of state of Au based on MgO pressure scale (2008)
  • Author(s): K. Hirose, N. Sata, T. Komabayashi, Y. Ohishi
  • Journal Title: Physics of the Earth and Planetary Interiors 167 Pages: 149-154
  • Peer Reviewed
• [Journal Article] PVT relations in MgO : an ultra-high P-T scale for planetary science applications (2008)
  • Author(s): Z. R. Wu, K. Wentzcovitch, K. Umemoto, B. Li, K. Hirose, J. Zheng
  • Journal Title: Journal Geophysical Research 113, B06204
  • Peer Reviewed
• [Journal Article] The compression of H2O ice to 126 GPa and implications for hydrogen-bond symmetrization : Synchrotron x-ray diffraction measurements and density-functional calculations (2008)
  • Author(s): E. Sugimura, T. Iitaka, K. Hirose, K. Kawamura, N. Sata, Y. Ohishi
  • Journal Title: Physical Review B 77, 214103
  • NAID: 130005053732
  • Peer Reviewed
• [Journal Article] Iron partitioning between perovskite and post-perovskite : A transmission electron microscope study (2008)
  • Author(s): K. Hirose, N. Takafuji, K. Fujino, S. R. Shieh, T. S. Duffy
  • Journal Title: American Mineralogist 93 Pages: 1678-1681
  • Peer Reviewed
• [Journal Article] Ferric iron content in (Mg,Fe)SiO3 perovskite and post-perovskite in the deep lower mantle conditions (2008)
  • Author(s): R. Sinmyo, H. Ozawa, K. Hirose, A.Yasuhara, N. Endo
  • Journal Title: American Mineralogist 93 Pages: 1899-1902
  • Peer Reviewed
• [Journal Article] Phase relations of iron and iron-nickel alloys up to 300 GPa ; Implications for the composition and the structure of the Earth's inner core (2008)
  • Author(s): Y. Kuwayama, K. Hirose, N. Sata, Y. Ohishi
  • Journal Title: Earth and Planetary Science Letters 273 Pages: 379-385
  • Peer Reviewed
• [Journal Article] Partitioning of iron between perovskite/post-perovskite and ferropericlase in the lower mantle (2008)
  • Author(s): R. Sinmyo, K. Hirose, D. Nishio-Hamane, Y. Seto, K. Fujino, N. Sata, Y. Ohishi
  • Journal Title: Journal of Geophysical Research 113, B11204
  • Peer Reviewed
• [Journal Article] Evaluation of analytical capability of NIR femtosecond laser ablation-inductively coupled plasma mass spectrometry (2008)
  • Author(s): T. Hirata, Y. Kon
  • Journal Title: Analytical Sciences 24 Pages: 345-353
  • NAID: 10021098927
  • Peer Reviewed
• [Journal Article] In situ Cu isotope analysis of copper-rich materials by near-IR femtosecond laser ablation (2008)
  • Author(s): Kei Ikehata, Takafumi Hirata, Kenji Notsu
  • Journal Title: J. Anal. Atom. Spectrom. 23 Pages: 1003-1008
  • Peer Reviewed
• [Journal Article] Evolution of the composition of sea water through geologic time, and its influence on the evolution of life (2008)
  • Author(s): T. Komiya, T. Hirata, et al.
  • Journal Title: Gondwana Research 14 Pages: 159-174
  • Peer Reviewed
• [Journal Article] Ca isotopic compositions of dolomite, phosphorite and the oldest animal embryo fossils from the Neoproterozoic in Weng'an, South China (2008)
  • Author(s): T. Komiya, A. Suga, T. Ohno, J. Han, J. Guo, S. Yamamoto, T. Hirata, et al.
  • Journal Title: Gondwana Research 14 Pages: 209-218
  • Peer Reviewed
• [Journal Article] Determination of 88Sr/86Sr mass-dependent isotopic fractionation and radiogenic isotope variation of 87Sr/86Sr in the Neoproterozoic Doushantuo Formation (2008)
  • Author(s): T. Ohno, T. Komiya, Y. Ueno, T. Hirata, S. Maruyama
  • Journal Title: Gondwana Research 14 Pages: 126-133
  • Peer Reviewed
• [Journal Article] Sr isotope excursion around Precambrian-Cambrian boundary, in Three Gorgearea, South China (2008)
  • Author(s): Y. Sawaki, Y. Fukushi, T. Ohno, T. Komiya, T. Ishikawa, T. Hirata, S. Maruyama
  • Journal Title: Gondwana Research 14 Pages: 134-147
  • Peer Reviewed
• [Journal Article] Internal structures and U-Pb ages of zircons from a tuff layer in the Meishucunian formation, Yunnan Province, South China (2008)
  • Author(s): Y Sawaki, M. Nishizawa, T. Suo, T. Komiya, T. Hirata, et al.
  • Journal Title: Gondwana Research 14 Pages: 148-158
  • Peer Reviewed
• [Journal Article] Evaluation of analytical capability of NIR femtosecond laser ablation-inductively coupled plasma mass spectrometry (2008)
  • Author(s): Takafumi Hirata, Yoshiaki Kon
  • Journal Title: Analytical Sciences (掲載決定)
  • NAID: 10021098927
  • Peer Reviewed
• [Journal Article] フェムト秒レーザーアブレーション-誘導結合プラズマ質量分析法を用いた高精度局所鉄同位体分析法の開発とその天然試料への応用 (2008)
  • Author(s): 山本洋樹、昆慶明、平田岳史
  • Journal Title: 分析化学 (掲載決定)
  • Peer Reviewed
• [Journal Article] High Speed Camera Imaging for Laser Ablation : Implication to Elemental Analysis using ICP-Mass Spectrometry (2007)
  • Author(s): T. Hirata, Zen Miyazaki
  • Journal Title: Anal. Chem. 79(1) Pages: 147-152
  • Peer Reviewed
• [Journal Article] Geology and zircon geochronology of the Acasta Gneiss Complex, northwestern Canada : New constraints on its tectonothermal history (2007)
  • Author(s): T. Iizuka, T. Komiya, Y. Uenoa, I. Katayama, Y. Uehara, S. Maruyama, T. Hirata, Simon P. Johnson, Daniel J. Dunkley
  • Journal Title: Precambrian Research 153 Pages: 179-208
  • Peer Reviewed
• [Journal Article] Development of an On-Line Flow Injection Sr/Matrix Separation Method for Accurate, High-Throughput Determination of Sr Isotope Ratios by Multiple Collector-Inductively Coupled Plasma-Mass Spectrometry (2007)
  • Author(s): P. Galler, A. Limbeck, S. F. Boulyga, G. Stingeder, T. Hirata, T. Prohaska
  • Journal Title: Anal. Chem. 79 Pages: 5023-5029
  • Peer Reviewed
• [Journal Article] Tectonic Boundary between the Sanbagawa Belt and the Shimanto Belt in Central Shikoku, Japan (2007)
  • Author(s): K. Aoki, T. Iizuka, T. Hirata, S. Maruyama, M. Terabayashi
  • Journal Title: J. Geol. Soc. Japan(地質学会論文賞受賞論文) 113 Pages: 171-183
  • NAID: 110006279282
  • Peer Reviewed
• [Journal Article] Development of an On-line Low Gas Pressure Cell for Laser Ablation-ICP-Mass Spectrometry (2007)
  • Author(s): T. Hirata
  • Journal Title: Analytical Sciences 23(Hot Article) Pages: 1195-1201
  • NAID: 10019826634
  • Peer Reviewed
• [Journal Article] Simultaneous Determination of Mass-dependent Isotopic Fractionation and Radiogenic Isotope Variation of Strontium in Geochemical Samples by Multiple Collector-ICP-Mass Spectrometry (2007)
  • Author(s): T. Ohno, T. Hirata
  • Journal Title: Analytical Sciences 23 Pages: 1275-1280
  • NAID: 10019793690
  • Peer Reviewed
• [Journal Article] High solubility of FeO in perovskite and the post-perovskite phase transition (2007)
  • Author(s): S. Tateno, K. Hirose, N. Sata, Y. Ohishi
  • Journal Title: Physics of the Earth and Planetary Interiors 160 Pages: 319-325
  • Peer Reviewed
• [Journal Article] A new high-pressure and high-temperature polymorph of FeS (2007)
  • Author(s): H. Ohfuji, N. Sata, H. Kobayashi, Y. Ohishi, K. Hirose, T. Irifune
  • Journal Title: Physics and Chemistry of Minerals 10.1007/s00269-007-0151-0
  • Peer Reviewed
• [Journal Article] The effect of iron spin transition on electrical conductivity of (Mg,Fe)O magnesiowustite (2007)
  • Author(s): K. Ohta, K. Hirose, S. Onoda, K. Shimizu
  • Journal Title: Proceedings of the Japan Academy, Ser. B 83 Pages: 97-100
  • Peer Reviewed
• [Journal Article] Sound velocity of MgSiO3 post-perovskite phase : A constraint on the D" discontinuity (2007)
  • Author(s): M. Murakami, S. Sinogeikin, J. Bass, N. Sata, Y. Ohishi, K. Hirose
  • Journal Title: Earth and Planetary Science Letters 259 Pages: 18-23
  • Peer Reviewed
• [Journal Article] Phase transition of CaSiO3 perovskite (2007)
  • Author(s): T. Komabayashi, K. Hirose, N. Sata, Y. Ohishi, L. Dubrovinsky
  • Journal Title: Earth and Planetary Science Letters 260 Pages: 564-569
  • Peer Reviewed
• [Journal Article] 西南日本外帯,熊野酸性岩類に含まれる赤色・無色・灰濁色ジルコンのU-Pb年代および微量元素組成と珪長質マグマの成因 (2007)
  • Author(s): 折橋裕二、岩野英樹、平田岳史、檀原 徹、新正裕尚
  • Journal Title: 地学雑誌 113 Pages: 366-383
  • NAID: 110006368280
  • Peer Reviewed
• [Journal Article] 高精度同位体分析技術の開発とその海洋化学への応用 (2007)
  • Author(s): 平田岳史
  • Journal Title: 海洋化学研究 20 Pages: 31-44
  • Peer Reviewed
• [Journal Article] High Speed Camera Imaging for Laser Ablation: Implication to Elemental Analysis using ICP-Mass Spectrometry (2007)
  • Author(s): Takafumi Hirata, Zen Miyazaki
  • Journal Title: Anal. Chem. 79(1) Pages: 147152-147152
  • Peer Reviewed
• [Journal Article] Geology and zircon geochronology of the Acasta Gneiss Complex, northwestern Canada: New constraints on its tectonothermal history (2007)
  • Author(s): Tsuyoshi Iizuka, Tsuyoshi Komiya, Yuichiro Uenoa, Ikuo Katayama, Yosuke Uehara, Shigenori Maruyama, Takafumi Hirata, Simon P. Johnson, Daniel J. Dunkley
  • Journal Title: Precambrian Research 153 Pages: 179208-179208
  • Peer Reviewed
• [Journal Article] Development of an On-Line Flow Injection Sr/Matrix Separation Method for Accurate, High-Throughput Determination of Sr Isotope Ratios by Multiple Collector-Inductively Coupled Plasma-Mass Spectrometry (2007)
  • Author(s): Patrick Galler, Andreas Limbeck, Sergei F. Boulyga, Gerhard Stingeder, Takafumi Hirata, and Thomas Prohaska
  • Journal Title: Anal. Chem. 79 Pages: 5023-5029
  • Peer Reviewed
• [Journal Article] Tectonic Boundary between the Sanbagawa Belt and the Shimanto Belt in Central Shikoku Japan (2007)
  • Author(s): Kazumasa Aoki, Tsuyoshi Iizuka, Takafumi Hirata, Shigenori Maruyama, Masaru Terabayashi
  • Journal Title: J. Geol. Soc. Japan 113 Pages: 171-183
  • NAID: 110006279282
  • Peer Reviewed
• [Journal Article] Development of an On-line Low Gas Pressure Cell for Laser Ablation-ICP-Mass Spectrometry (2007)
  • Author(s): Takafumi Hirata
  • Journal Title: Analytical Sciences 23 Pages: 1195-1201
  • NAID: 10019826634
  • Peer Reviewed
• [Journal Article] フェムト秒レーザーIFRITを用いたLA-ICP-MSについて (2007)
  • Author(s): 平田岳史
  • Journal Title: Laser Focus World Japan 11月号 Pages: 58-29
  • Peer Reviewed
• [Journal Article] Differences in the trace element deposition in otoliths between marine-and freshwater-resident Japanese eels, Anguilla japonica, as determined by laser ablation ICPMS (2006)
  • Author(s): T. Arai, T. Hirata
  • Journal Title: Environmental Biology of Fishes 75 Pages: 173-182
  • Peer Reviewed
• [Journal Article] Evidence of primitive melt heterogeneities preserved in plagioclase-hosted melt inclusions of South Atlantic MORB (2006)
  • Author(s): M. Magnani, T. Fujii, Y. Orihashi, A. Yasuda, T. Hirata, A. Santo, Gloria Vaggelli
  • Journal Title: Geochem. J. 40 Pages: 277-290
  • NAID: 10018144306
  • Peer Reviewed
• [Journal Article] Sclerite formation in the fudrotherma-vent"scaly-foot"gastropod-possible control of iron sulfide biomineralization by the animal (2006)
  • Author(s): Y. Suzuki, R. E. Kopp, T. Kogure, A. Suga, K. Takai, S. Tsuchida, N. Ozaki, K. Endo, J. Hashimoto, Y. Kato, C. Mizota, T. Hirata, H. Chiba, K. H. Nealson, K. Horikoshi, J. L. Kirschvink
  • Journal Title: Earth. Planet. Sci. Lett. 242 Pages: 39-50
  • Peer Reviewed
• [Journal Article] 4.2 Ga zircon xenocryst in an Acasta gneiss from northwestern Canada : Evidence for early continental crust (2006)
  • Author(s): T. Iizuka, K. Horie, T. Komiya, S. Maruyama, T. Hirata, H. Hidaka, B. F. Windley
  • Journal Title: Geology 34 Pages: 245-248
  • Peer Reviewed
• [Journal Article] Volcanism in response to plate flexure (2006)
  • Author(s): 44. N. Hirano, E. Takahashi, J. Yamamoto, N. Abe, S. P. Ingle, I. Kaneoka, T. Hirata, J. Kimura, T. Ishii, Y. Ogawa, S. Machida, K. Suyehiro
  • Journal Title: Science 313 Pages: 1426-1428
  • Peer Reviewed
• [Journal Article] Tungsten Isotopic Analysis on Six Geochemical Reference Materials using Multiple Collector-ICP-Mass Spectrometry Coupled with Rhenium-External Correction Technique (2006)
  • Author(s): K. Irisawa, T. Hirata
  • Journal Title: J. Anal. Atom. Spectrom 21 Pages: 1387-1395
  • Peer Reviewed
• [Journal Article] Determination of Natural Variation in Nickel using Inductively Coupled Plasma Mass Spectrometry (2006)
  • Author(s): M. Tanimizu, T. Hirata
  • Journal Title: J. Anal. Atom. Spectrom 21 Pages: 1423-1426
  • Peer Reviewed
• [Journal Article] Determination of trace elements in otoliths of chum salmon Oncorhynchus keta by laser ablation-ICP-mass Spectrometry (2006)
  • Author(s): T. Arai and T. Hirata
  • Journal Title: Fisheries Science 72 Pages: 977-984
  • NAID: 10017958311
  • Peer Reviewed
• [Journal Article] Zircon U-Pb ages from tuff beds of the upper Mesozoic Tetori Group in the Shokawa district, Gifu Prefecture (2006)
  • Author(s): N. Kusuhashi, A. Matsumoto, M. Murakami, T. Tagami, T. Hirata, T. Iizuka, T. Handa, H. Matsuoka
  • Journal Title: central Japan. Island Arc 15 Pages: 378-390
  • Peer Reviewed
• [Journal Article] High-pressure behavior of MnGeO3 and CdGeO3 and the post-perovskite phase transition (2006)
  • Author(s): S. Tateno, K. Hirose, N. Sata, Y. Ohishi
  • Journal Title: Physics and Chemistry of Minerals 32 Pages: 721-725
  • Peer Reviewed
• [Journal Article] Determination of post-perovskite phase transition boundary in MgSiO3 using Au and MgO internal pressure standards (2006)
  • Author(s): K. Hirose, R. Sinmyo, N. Sata, Y. Ohishi
  • Journal Title: Geophysical Research Letters 33, L01310
  • Peer Reviewed
• [Journal Article] Equation of state of the post-perovskite phase synthesized from a natural (Mg,Fe)SiO3 orthopyroxene (2006)
  • Author(s): S. Shieh, T. Duffy, A. Kubo, G. Shen, V. Prakapenka, N. Sata, K. Hirose, Y. Ohishi
  • Journal Title: Proceedings of the National Academy of Sciences 103 Pages: 3039-3043
  • Peer Reviewed
• [Journal Article] Unsolved problems in the lowermost mantle (2006)
  • Author(s): K. Hirose, S. Karato, V. Cormier, J. Brodholt, D. Yuen
  • Journal Title: Geophysical Research Letters 33, L12S01
  • Peer Reviewed
• [Journal Article] Ferric iron in Al-bearing post-perovskite (2006)
  • Author(s): R. Sinmyo, K. Hirose, H. St. C. O'Neill, E. Okunishi
  • Journal Title: Geophysical Research Letters 33, L12S13
  • Peer Reviewed
• [Journal Article] Postperovskite phase transition and its geophysical implications (2006)
  • Author(s): K. Hirose
  • Journal Title: Reviews of Geophysics 44, RG3001
  • Peer Reviewed
• [Journal Article] Evidence of primitive melt heterogeneities preserved in plagioclase-hostedelt inclusions of South Atlantic MORB (2006)
  • Author(s): Marco Magnani, Toshitsugu Fujii, Yuji Orihashi, Atsushi Yasuda, Takefumi Hirata, Aiba Santo, Gloria Vaggelli
  • Journal Title: Geochem. J. 40 Pages: 277-290
• [Journal Article] Sclerite formation in the fudrotherma-vent "scaly-foot" gastropod-possible control of iron sufide biomineralization by the animal (2006)
  • Author(s): Y.Suzuki, R.E.Kopp, T.Kogure, A.Suga, K.Takai, S.Tsuchida, N.Ozaki, K.Endo, J.Hashimoto, Y.Kato, C.Mizota, Takafumi Hirata, H.Chiba, K.H.Nealson, K.Horikoshi, J.L.Lirschvink
  • Journal Title: Earth. PLanet. Sci. Lett. 242 Pages: 39-50
• [Journal Article] 4.2 Ga zircon xenocryst in an Acasta gneiss from northwestern Canada : Evidence for early continental crust (2006)
  • Author(s): Tsuyoshi Iizuka, Kenji Horie, Tsuyoshi Komiya, Shigenori Maruyama, Takafumi Hirata, Hiroshi Hidaka, Brain F. Windley
  • Journal Title: Geology 34 Pages: 245-248
• [Journal Article] volcanism in response to plate flexure (2006)
  • Author(s): N.Hirano, E.Takahashi,, J.Yamamoto, N.Abe, S.P.Ingle, I.Kaneoka, Takafumi Hirata,, J.Kimura, T.Ishii, Y.Ogawa, S.Machida, K.Suyehiro
  • Journal Title: Science 313 Pages: 1426-1428
• [Journal Article] Tungsten Isotopic Analysis on Six Geochemical Reference Materials using Multiple Collector-ICP-Mass spectrometry Coupled with Rhenium-Extermal Correction Technique (2006)
  • Author(s): Keita Irisawa., Takafumi Hirata
  • Journal Title: J. Anal. Atom. Spectrom. 21 Pages: 1387-1395
• [Journal Article] Determination of Natural Variation in Nickel using Inductively Coupled Plasma Mass Spectrometry (2006)
  • Author(s): Masaharu Tanimizu, Takafumi Hirata
  • Journal Title: J. Anal. Atom. Spectrom. 21 Pages: 1423-1426
• [Presentation] Development of NIR fs-Laser Ablation-ICPMS Technique for Chemical Analysis of Metallic Materials (2008)
  • Author(s): Takafumi Hirata
  • Organizer: Asia-Pacific Winter Conference on Plasma Spectroscopy
  • Place of Presentation: Tsukuba, Japan
  • Year and Date: 2008-11-19
• [Presentation] ICP質量分析法による水銀同位体分析法の開発 (2008)
  • Author(s): 平田岳史, 深海雄介
  • Organizer: 日本質量分析学会同位体比部会
  • Place of Presentation: 名古屋(新城市)
  • Year and Date: 2008-11-05
• [Presentation] フェムト秒レーザーアブレーションICP質量分析法の新展開 (2008)
  • Author(s): 平田岳史、昆慶明
  • Organizer: 日本地球化学会
  • Place of Presentation: 東京・駒場
  • Year and Date: 2008-09-18
• [Presentation] フェムト秒レーザーアプレーションICP質量分析法の新展開 (2008)
  • Author(s): 平田岳史, 昆慶明
  • Organizer: 日本地球化学会
  • Place of Presentation: 東京(駒場)
  • Year and Date: 2008-09-17
• [Presentation] In-situ Isotopic Analysis of Fe and C in Geochemical Samples using NIR Femtosecond Laser Ablation-MC-ICP-Mass Spectrometry (2008)
  • Author(s): T. Hirata, K. Ikehata, K. Notsu, H. Yamamoto, M. Nishizawa, Y. Ueno
  • Organizer: 9th European Workshop on Laser Ablation
  • Place of Presentation: Prague, Czech
  • Year and Date: 2008-07-08
• [Presentation] In-situ Isotopic Analysis of Fe and C in Geochemical Samples using NIR Femtosecond Laser Ablation-MC・ICP-Mass Spectrometry (2008)
  • Author(s): T. Hirata, K. Ikehata, K. Notsu, H. Yamamoto, M. Nishizawa, Y. Ueno
  • Organizer: 9^<th> European Workshop on Laser Ablation
  • Place of Presentation: Prague, Czech
  • Year and Date: 2008-07-08
• [Presentation] Elemental Analysis using Femtosecond Laser Ablation-ICP Mass Spectrometry in Earth's Science (2008)
  • Author(s): Takafumi Hirata
  • Organizer: International Symposium on Laser Precision Microfabrication
  • Place of Presentation: Quebec, Canada
  • Year and Date: 2008-06-18
• [Presentation] Elemental Analysis using Femtosecond Laser Ablation-ICP Mass Spectrometry in Earth's Science (2008)
  • Author(s): T. Hirata
  • Organizer: 9th International Symposium on Laser Precision Microfabrication
  • Place of Presentation: Quebec, Canada
  • Year and Date: 2008-06-18
• [Presentation] Principles of the Inductively Coupled Plasma Mass Spectrometry (ICP-MS) (2008)
  • Author(s): Takafumi Hirata
  • Organizer: The KIGAM Workshop on Isotope Geochemistry
  • Place of Presentation: Taejon, Korea
  • Year and Date: 2008-02-14
• [Presentation] 分析化学の進歩と地球化学 (2008)
  • Author(s): 平田岳史
  • Organizer: 地球科学ニューイヤースクール
  • Place of Presentation: 東京都・代々木
  • Year and Date: 2008-01-06
• [Presentation] Isotopic Fractionation of Calcium through Elemental Metabolism (2007)
  • Author(s): T. Hirata, M. Tanoshima, Y. Tanaka, A. Suga, A. Shinohara, M. Chiba
  • Organizer: International Symposium on Metallomics
  • Place of Presentation: 愛知県・名古屋市
  • Year and Date: 2007-12-01
• [Presentation] フェムト秒レーザーアブレーションICP質量分析計による金属相中の白金属元素の分配 (2007)
  • Author(s): 平田岳史・昆 慶明
  • Organizer: 質量分析学会同位体比部会
  • Place of Presentation: 北海道・札幌市
  • Year and Date: 2007-10-25
• [Presentation] 地球惑星科学からみた地球環境問題 (2007)
  • Author(s): 平田岳史
  • Organizer: 兵庫県立柏原高等学校進路探求ウィーク
  • Place of Presentation: 兵庫県・丹波市
  • Year and Date: 2007-10-05
• [Presentation] 地球環境変化と生命進化 (2007)
  • Author(s): 平田岳史
  • Organizer: 平成19年度桐蔭学園フロンティアセミナー
  • Place of Presentation: 神奈川県・横浜市
  • Year and Date: 2007-09-24
• [Presentation] The Fifth Elements (2007)
  • Author(s): 平田岳史
  • Organizer: 日本地球化学会若手シンポジウム
  • Place of Presentation: 広島県・広島市
  • Year and Date: 2007-09-22
• [Presentation] フェムト秒レーザーを用いたレーザーアブレーション-ICP質量分析法の開発 (2007)
  • Author(s): 平田岳史, 昆慶明
  • Organizer: 日本地球化学会年会
  • Place of Presentation: 岡山県・岡山市
  • Year and Date: 2007-09-20
• [Presentation] レーザーアブレーション-プラズマ質量分析法による同位体分析法の開発 (2007)
  • Author(s): 平田岳史
  • Organizer: 第55回質量分析総合討論会
  • Place of Presentation: 広島県・広島市
  • Year and Date: 2007-05-15
• [Presentation] 真空セル方式レーザーアブレーション-ICPMS法による固体試料の元素 (2006)
  • Author(s): 平田岳史
  • Organizer: 質量分析学会同位体比部会
  • Place of Presentation: 鬼怒川・栃木
  • Year and Date: 2006-11-21
• [Presentation] レーザーアブレーションにおける試料再沈着と元素分別について (2006)
  • Author(s): 平田岳史
  • Organizer: 日本分析化学会
  • Place of Presentation: 大阪大学・大阪
  • Year and Date: 2006-09-14
• [Presentation] High Speed Camera Imaging of Laser Ablation Point (2006)
  • Author(s): Takafumi Hirata
  • Organizer: European Workshop on Laser Ablation
  • Place of Presentation: Zurich, Switzerland
  • Year and Date: 2006-07-18
• [Remarks] 作成中