Graduate School of Science and Technology Environmental Science and Technology Associate Professor
Faculty of Science Department of Science Associate Professor
Updated on 2024/10/06
博士(理学) ( 2003.3 京都大学 )
修士(理学) ( 1999.3 京都大学 )
trace metals
analytical method
ocean
global biogeochemical cycle
GEOTRACES
seawater
solid phase extraction
海洋.微量金属.分析法.海水.固相抽出.生物地球化学的循環.国際GEOTRACES計画
Environmental Science/Agriculture Science / Environmental dynamic analysis
Niigata University Faculty of Science, Department of Environmental Science and Technology Associate Professor
2013.4
Institute for Chemical Research, Kyoto University Hydrospheric Environment Analytical Chemistry Assistant Professor
2007.4 - 2013.3
Institute for Chemical Research, Kyoto University Hydrospheric Environment Analytical Chemistry Assistant Professor
2006.4 - 2007.3
Institute for Chemical Research, Kyoto University Hydrospheric Environment Analytical Chemistry Research Associate
2001.4 - 2006.3
Niigata University Faculty of Science Department of Science Associate Professor
2017.4
Niigata University Graduate School of Science and Technology Environmental Science and Technology Associate Professor
2013.4
Niigata University Graduate School of Science and Technology Environmental Science and Technology Associate Professor
2013.4
Niigata University Abolition organization Physicochemical Science Associate Professor
2013.4 - 2017.3
Kyoto University Graduate School of Science Division of Chemistry
1999.4 - 2002.3
Country: Japan
Kyoto University Graduate School of Science Division of Chemistry
1997.4 - 1999.3
Kyoto University Faculty of Science Department of Chemistry
1993.4 - 1997.3
Japan Society of analytical chemistry
American Geophysical Union
Geochemial Society
Japanese society of oceanography
the geochemical society of Japan
日本海洋学会
日本地球化学会
日本分析化学会
日本化学会
Chemical society of Japan
地球物理学会(American Geophysical Union)
地球化学会(Geochemical Society)
Linjie Zheng, Tomoharu Minami, Wataru Konagaya, Cheuk-Yin Chan, Makoto Tsujisaka, Shotaro Takano, Kazuhiro Norisuye, Yoshiki Sohrin
Geochimica et Cosmochimica Acta 254 102 - 121 2019.6
Dissolved iron and zinc in Sagami Bay and the Izu-Ogasawara Trench Reviewed
Hajime Obata, Jun Nishioka, Taejin Kim, Kazuhiro Norisuye, Shigenobu Takeda, Yohei Wakuta, Toshitaka Gamo
JOURNAL OF OCEANOGRAPHY 73 ( 3 ) 333 - 344 2017.6
Impact of anthropogenic Pb and ocean circulation on the recent distribution of Pb isotopes in the Indian Ocean Reviewed
Jong-Mi Lee, Edward A. Boyle, Toshitaka Gamo, Hajime Obata, Kazuhiro Norisuye, Yolanda Echegoyen
GEOCHIMICA ET COSMOCHIMICA ACTA 170 126 - 144 2015.12
Recent distribution of lead in the Indian Ocean reflects the impact of regional emissions Reviewed
Yolanda Echegoyen, Edward A. Boyle, Jong-Mi Lee, Toshitaka Gamo, Hajime Obata, Kazuhiro Norisuye
Proceedings of the National Academy of Sciences 111 ( 43 ) 15328 - 15331 2014.10
Anthropogenic Lead Emissions in the Ocean: The Evolving Global Experiment Reviewed
Edward Boyle, Jong-Mi Lee, Yolanda Echegoyen, Abigail Noble, Simone Moos, Gonzalo Carrasco, Ning Zhao, Richard Kayser, Jing Zhang, Toshitaka Gamo, Hajime Obata, Kazuhiro Norisuye
Oceanography 27 ( 1 ) 69 - 75 2014.3
Determination of bismuth in open ocean waters by inductively coupled plasma sector-field mass spectrometry after chelating resin column preconcentration Reviewed
Norisuye, K, Sohrin, Y
Analytica Chimica Acta 727 71 - 77 2012.5
Iron-catalyzed aromatic amination for nonsymmetrical triarylamine synthesis Reviewed
Hatakeyama, T., Imayoshi, R., Yoshimoto, Y., Ghorai, S.K., Jin, M., Takaya, H., Norisuye, K., Sohrin, Y., Nakamura, M.
Journal of the American Chemical Society 134 ( 50 ) 20262 - 20265 2012
The molybdenum isotopic composition of the modern ocean Reviewed
Nakagawa, Yusuke, Takano, Shotaro, Firdaus, M. Lutfi, Norisuye, Kazuhiro, Hirata, Takafumi, Vance, Derek, Sohrin, Yoshiki
GEOCHEMICAL JOURNAL 46 ( 2 ) 131 - 141 2012
Cid, A. P, Urushihara, S, Minami, T, Norisuye, K, Sohrin, Y
Journal of Oceanography 68 ( 3 ) 483 - 484 2012
Stoichiometry among bioactive trace metals in seawater on the Bering Sea shelf Reviewed
Abigail Parcasio Cid, Syouhei Urushihara, Tomoharu Minami, Kazuhiro Norisuye, Yoshiki Sohrin
JOURNAL OF OCEANOGRAPHY 67 ( 6 ) 747 - 764 2011.12
Strong elemental fractionation of Zr-Hf and Nb-Ta across the Pacific Ocean Reviewed
M. Lutfi Firdaus, Tomoharu Minami, Kazuhiro Norisuye, Yoshiki Sohrin
NATURE GEOSCIENCE 4 ( 4 ) 227 - 230 2011.4
Minami, T, Higo, E, Nakatsuka, S, Cid, A. P., Vu, H. T. D, Norisuye, K, Sohrin, Y
Bunseki Kagaku 59 ( 12 ) 1087 - 1096 2010
Behaviors of dissolved and particulate Co, Ni, Cu, Zn, Cd and Pb during a mesoscale Fe-enrichment experiment (SEEDS II) in the western North Pacific Reviewed
Nakatsuka, S, K. Okamura, S. Takeda, J. Nishioka, M.L. Firdaus, K. Norisuye, Y. Sohrin
Deep Sea Research Part II 56 ( 26 ) 2822 - 2838 2009.12
Spatial and temporal distribution of Fe, Ni, Cu and Pb along 140°E in the Southern Ocean during austral summer 2001/02 Reviewed
Xiaodong Lai, Kazuhiro Norisuye, Michi Mikata, Tomoharu Minami, Andrew R. Bowie, Yoshiki Sohrin
Marine Chemistry 111 ( 3-4 ) 171 - 183 2008.9
Yoshiki Sohrin, Shouhei Urushihara, Seiji Nakatsuka, Tomohiro Kono, Eri Higo, Tomoharu Minami, Kazuhiro Norisuye, Shigeo Umetani
Analytical Chemistry 80 ( 16 ) 6267 - 6273 2008.7
Dissolved and labile particulate Zr, Hf, Nb, Ta, Mo and W in the western North Pacific Ocean Reviewed
M. Lutfi Firdaus, Kazuhiro Norisuye, Yusuke Nakagawa, Seiji Nakatsuka, Yoshiki Sohrin
Journal of Oceanography 64 ( 2 ) 247 - 257 2008.4
Solid Phase Extraction with Chelating Adsorbents for the Study of Trace Metals in Seawater Reviewed
SOHRIN Yoshiki, FIRDAUS Mochamad Lutfi, NAKATSUKA Seiji, MINAMI Tomoharu, NORISUYE Kazuhiro
Biomedical Research on Trace Elements 18, 319-327 ( 4 ) 319 - 327 2008
Simultaneous determination of suspended particulate trace metals (Co, Ni, Cu, Zn, Cd and Pb) in seawater with small volume filtration assisted by microwave digestion and flow injection inductively coupled plasma mass spectrometer Reviewed
Seiji Nakatsuka, Kei Okamura, Kazuhiro Norisuye, Yoshiki Sohrin
Analytica Chimica Acta 594 ( 1 ) 52 - 60 2007.6
Preconcentration of Zr, Hf, Nb, Ta and W in seawater using solid-phase extraction on TSK-8-hydroxyquinoline resin and determination by inductively coupled plasma-mass spectrometry Reviewed
M. Lutfi Firdaus, Kazuhiro Norisuye, Taishi Sato, Shouhei Urushihara, Yusuke Nakagawa, Shigeo Umetani, Yoshiki Sohrin
Analytica Chimica Acta 583 ( 2 ) 296 - 302 2007.2
Distribution of bioactive trace metals (Fe, Co, Ni, Cu, Zn and Cd) in the Sulu Sea and its adjacent seas Reviewed
K. Norisuye, M. Ezoe, S. Nakatsuka, S. Umetani, Y. Sohrin
Deep Sea Research Part II: Topical Studies in Oceanography 54 ( 1-2 ) 14 - 37 2007.1
K. Norisuye, K. Okamura, Y. Sohrin, H. Hasegawa, T. Nakanishi
Journal of Radioanalytical and Nuclear Chemistry 267 ( 1 ) 183 - 193 2006.12
The budget of dissolved trace metals in Lake Biwa, Japan Reviewed
Saeko Mito, Yoshiki Sohrin, Kazuhiro Norisuye, Hiroshi Hasegawa, Munetsugu Kawashima, Masakazu Matsui, Masahiro Maruo, Mitsuo Tsuchiya
Limnology 5 ( 1 ) 7 - 16 2004.4
Distributions of dissolved and acid-dissolvable bioactive trace metals in the North Pacific Ocean Reviewed
Masako Ezoe, Tsunemi Ishita, Masatoshi Kinugasa, Xiaodong Lai, Kazuhiro Norisuye, Yoshiki Sohrin
GEOCHEMICAL JOURNAL 38 ( 6 ) 535 - 550 2004
Determination of minor and trace elements in biogenic carbonate minerals of coccolithophores by high-resolution inductively coupled plasma mass spectrometry
H Hasegawa, S Mito, K Norisuye, M Matsui, T Maki, K Ueda
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 76 ( 1 ) 115 - 120 2003.1
Biosynthesis and release of methylarsenic compounds during the growth of freshwater algae Reviewed
Hiroshi Hasegawa, Yoshiki Sohrin, Kayoko Seki, Mayuko Sato, Kazuhiro Norisuye, Kanako Naito, Masakazu Matsui
Chemosphere 43 ( 3 ) 265 - 272 2001.4
A method for preconcentrating Zr from large volumes of seawater using MnO2-impregnated fibers Reviewed
K Norisuye, H Hasegawa, S Mito, Y Sohrin, M Matsui
Talanta 53 ( 3 ) 639 - 644 2000.12
プルトニウム-人類の影響
海と湖の化学 2005
Multielemental determination and intercalibration of bioactive trace metals
38 ( 6 ) 346 - 351 2016.6
Inter-basin fractionation on the distribution of bioactive trace metals in seawater
38 ( 6 ) 314 - 322 2016.6
生物活性微量金属の多元素分析と国際相互較正
宗林由樹, 肥後衣里, 南知晴, 中塚清次, 則末和宏
月刊海洋 42 ( 1 ) 8 - 13 2010
Marine geochemistry of Zr, Hf, Nb, Ta, Mo and W
Firdaus, M. L, Nakagawa, Y, Norisuye, K, Sohrin, Y
Transactions of The Research Institute of Oceanochemistry 22 ( 1 ) 3 - 6 2009.4
Precise Isotopic Analysis of Mo in Seawater Using Multiple Collector-Inductively Coupled Mass Spectrometry Coupled with a Chelating Resin Column Preconcentration Method
Yusuke Nakagawa, M. Lutfi Firdaus, Kazuhiro Norisuye, Yoshiki Sohrin, Keita Irisawa, Takafumi Hirata
ANALYTICAL CHEMISTRY 80 ( 23 ) 9213 - 9219 2008.12
Multielemental determination of GEOTRACES key trace metals by column concentration and ICP-MS
Kazuhiro Norisuye, Shouhei Urushihara, Seiji Nakatsuka, Tomohiro Kono, Eri Higo, Tomoharu Minami, Yoshiki Sohrin
GEOCHIMICA ET COSMOCHIMICA ACTA 72 ( 12 ) A688 - A688 2008.7
Behaviors of incompatible elements in the western North Pacific Ocean
M. Lutfi Firdaus, Yusuke Nakagawa, Kazuhiro Norisuye, Yoshiki Sohrin
GEOCHIMICA ET COSMOCHIMICA ACTA 72 ( 12 ) A271 - A271 2008.7
Precise Mo isotopic analysis on Pacific and Antarctic seawater
Y. Nakagawa, M. L. Firdaus, K. Norisuye, Y. Sohrin, K. Irisawa, T. Hirata
GEOCHIMICA ET COSMOCHIMICA ACTA 72 ( 12 ) A670 - A670 2008.7
微量元素と同位体を用いる世界海洋の断面観測 国際GEOTRACES計画
化学と工業 61-3, 232-233 2008
Mo isotopic compositions of seawater and land water
Nakagawa Yusuke
Abstracts of Annual Meeting of the Geochemical Society of Japan 55 60 - 60 2008
Physicochemical speciation of trace metals during the mesoscale iron enrichment (SEEDS II) in the western North Pacific
S. Nakatsuka, Y. Sohpjn, K. Norisuye, K. Okamura, S. Takeda, J. Nishioka
GEOCHIMICA ET COSMOCHIMICA ACTA 71 ( 15 ) A704 - A704 2007.8
Development of chelate resin column preconcentration method for precise isotope analysis of Mo in seawater
Y. Nakagawa, M. Lutfi Firdaus, K. Norisuye, Y. Sohrin, K. Irisawa, T. Hirata
GEOCHIMICA ET COSMOCHIMICA ACTA 71 ( 15 ) A701 - A701 2007.8
Determination of Zr, Hf, Nb, Ta, Mo and W in seawater
Firdaus, M. L, Norisuye, K, Sohrin, Y
Transactions of The Research Institute of Oceanochemistry 20 ( 1 ) 45 - 46 2007.4
Determination of Zr, Hf, Nb, Ta, Mo and W in seawater. Transactions of the Research Institute of Oceanochemistry (共著)
Trasactions of the Research Institute of Oceanochemistry 20, 45-46 2007
重金属 多元素同時分析
第5版実験化学講座 293-298 2007
Simultaneous determination of trace metals in seawater using NOBIAS CHELATE-PA-1 and its application to the Bering Sea and the Arctic Ocean(共著)
International Symposium on Metallomics 29th 2007
Determination and distribution of Zr, Hf, Nb, Ta and W in the North Pacific Ocean
M. Lutfi Firdaus, K. Norisuye, T. Sato, S. Urushihara, Y. Nakagawa, Y. Sohrin
GEOCHIMICA ET COSMOCHIMICA ACTA 70 ( 18 ) A175 - A175 2006.8
海水中生物活性微量金属元素群の分布における海盆間分別 (総特集 微量元素と同位体を用いた海洋の生物地球化学研究--GEOTRACES計画の動向と推進)
則末 和宏, 宗林 由樹
海洋 38 ( 5 ) 316 - 324 2006.5
海水中微量および超微量元素の分析(共著)
ぶんせき 12, 613-617 2006
Novel determination of Pd, Pt and Au in the western North Pacific seawater(共著)
Eos. Trans. AGU, West. Pac. Geophys. Meet. Suppl. A 87, B44A-02 2006
Inter-basin fractionation on the distributions of bioactive trace metals and metal/nutrient ratios in the Sulu Sea, South China Sea and western North Pacific(共著)
Eos. Trans. AGU, West. Pac. Geophys. Meet. Suppl. A 87, B44A-02 2006
海水中生物活性微量金属元素群の分布における海盆間分別(共著)
月刊海洋 38, 316-324 2006
Spatial and temporal distribution of Fe, Ni, Cu and Pb along 140E in the Southern Ocean in 2001/2002 austral summer(共著)
Eos. Trans. AGU, West. Pac. Geophys. Meet. Suppl. A 87, OS16M-11 2006
北太平洋における生物活性微量金属の分布(共著)
月刊海洋 39, 54-60 2005
則末 和宏
海洋化学研究 17, 91-96 ( 2 ) 91 - 96 2004
Zr, Nb, Hf, Ta, and W in the northwest Pacific Ocean
Y Sohrin, M Mikata, T Minami, K Norisuye
GEOCHIMICA ET COSMOCHIMICA ACTA 67 ( 18 ) A441 - A441 2003.9
Pu-240/Pu-239 isotopic ratio in the western northwest Pacific Ocean
K Norisuye, K Okamura, Y Sohrin, H Hasegawa, T Nakanishi
GEOCHIMICA ET COSMOCHIMICA ACTA 66 ( 15A ) A559 - A559 2002.8
SOHRIN Yoshiki, UMETANI Shigeo, SASAKI Yoshihiro, OKAMURA Kei, NORISUYE Kazuhiro
ICR annual report 8 14 - 15 2002.3
Determination of trace metals in the ocean by MAF-8HQ column extraction-ICP-MS(共著)
Analytical Sciences Supplement 17, 1-4 2001
Determination of 240Pu/239Pu ratio in the ocean by using HR-ICP-MS(共著)
Analytical Sciences Supplement 17, 29-32 2001
Establishment of a simple method for determination of Pb in open ocean water and the distribution of lead and the stable isotopic ratios in the Japan Trench.
Matsubara Yuna, Nakagawa Masachika, Norisuye Kazuhiro, Obata Hajime, Okamura Kei, Nagaishi Kazuya, Ishikawa Tsuyoshi, Gamo Toshitaka
Abstracts of Annual Meeting of the Geochemical Society of Japan 2017 GEOCHEMICAL SOCIETY OF JAPAN
The distribution of bismuth in the North Pacific and its formation mechanism
Norisuye Kazuhiro, Takahashi Kenta, Hasegawa Show, Takano Shotaro, Sohrin Yoshiki, Obata Hajime, Gamo Toshitaka
Abstracts of Annual Meeting of the Geochemical Society of Japan 2016 GEOCHEMICAL SOCIETY OF JAPAN
Dissolved iron and zinc in the Sagami Bay and Izu-Ogasawara Trench area
Obata Hajime, Nishioka Jun, Kim Taejin, Norisuye Kazuhiro, Takeda Shigenobu, Wakuta Yohei, Gamo Toshitaka
Abstracts of Annual Meeting of the Geochemical Society of Japan 2014 GEOCHEMICAL SOCIETY OF JAPAN
Stoichiometry among bioactive trace metals in the eastern Bering Sea
Sohrin Yoshiki, Cid Abigail Parcasio, Urushihara Syouhei, Minami Tomoharu, Norisuye Kazuhiro
Abstracts of Annual Meeting of the Geochemical Society of Japan 2011 GEOCHEMICAL SOCIETY OF JAPAN
Mo isotopic compositions in the hydrosphere
Nakagawa Yusuke, Mochamad Lutfi Firdaus, Norisue Kazuhiro, Sohrin Yusuke, Hirata Takafumi
Abstracts of Annual Meeting of the Geochemical Society of Japan 2009 GEOCHEMICAL SOCIETY OF JAPAN
Sectional distribution of bioactive trace metals along 170˚W in the Southern Ocean
Norisuye Kazuhiro, Minami Tomoharu, Higo Eri, Matsunari Takahiro, Sohrin Yoshiki
Abstracts of Annual Meeting of the Geochemical Society of Japan 2009 GEOCHEMICAL SOCIETY OF JAPAN
Mo isotopic compositions of seawater and land water
Nakagawa Yusuke
Abstracts of Annual Meeting of the Geochemical Society of Japan 2008 GEOCHEMICAL SOCIETY OF JAPAN
多元素同位体の複合解析による回遊生物の新たな生物地球化学タグの確立
Grant number:22H05029
2022.5 - 2025.3
System name:科学研究費助成事業
Research category:学術変革領域研究(B)
Awarding organization:日本学術振興会
石村 豊穂, 西田 梢, 則末 和宏, 田副 博文
Grant amount:\39260000 ( Direct Cost: \30200000 、 Indirect Cost:\9060000 )
Study of the internal cycles of trace metals in the western North Pacific by using ship observation and modeling
Grant number:22H03728
2022.4 - 2026.3
System name:Grants-in-Aid for Scientific Research
Research category:Grant-in-Aid for Scientific Research (B)
Awarding organization:Japan Society for the Promotion of Science
Grant amount:\17290000 ( Direct Cost: \13300000 、 Indirect Cost:\3990000 )
Ocean section observation in the Pacific Ocean, Indian Ocean, and Japan Sea by multielemental determination of trace elements
Grant number:24241004
2012.4 - 2015.3
System name:Grants-in-Aid for Scientific Research
Research category:Grant-in-Aid for Scientific Research (A)
Awarding organization:Japan Society for the Promotion of Science
SOHRIN Yoshiki, NAKAGUCHI Yuzuru, NORISUYE Kazuhiro, MINAMI Tomoharu, TAKANO Shotaro, ZHENG Linjie
Grant amount:\48490000 ( Direct Cost: \37300000 、 Indirect Cost:\11190000 )
Ocean-sectional distribution of bioactive trace metals (Al, Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb) has been studied in the Indian Ocean, Arctic Ocean, and other regions. A novel automated preconcentration system has been developed for one-step preconcentration of bioactive trace metals. A precise analytical method for copper stable isotope ratio in seawater has been developed to reveal distribution and cycling of copper stable isotopes in the Pacific, Indian, and Atlantic Ocean. In addition, we studied high-field strength elements (Zr, Hf, Nb, Ta, Mo, W), noble metals (Pd, Pt, Au), Se, Bi, and speciation. We also joined the R/V Hakuho-maru cruises of KH-12-4 in the subarctic North Pacific and of KH-14-6 from the North Pacific through the Antarctic to carry out clean sampling of seawater from surface to bottom.
GEOTRACES program in the Pacific Ocean: studies on the 3-dimensional distribution and behavior of trace elements and isotopes
Grant number:23253001
2011.4 - 2016.3
System name:Grants-in-Aid for Scientific Research
Research category:Grant-in-Aid for Scientific Research (A)
Awarding organization:Japan Society for the Promotion of Science
GAMO Toshitaka, OBATA Hajime, AMAKAWA Hiroshi, SOHRIN Yoshiki, ZHANG Jing, MURAYAMA Masafumi, NORISUYE Kazuhiro, SETA Akihiro
Grant amount:\51350000 ( Direct Cost: \39500000 、 Indirect Cost:\11850000 )
We have widely promoted marine biogeochemical studies of trace elements and their isotopes in the Pacific Ocean, as part of a large-scale international program GEOTRACES. By applying a clean sampling system and clean spaces on board R/V Hakuho Maru, two long cruises, KH-12-4 and KH-14-6, were successfully conducted along an east-west latitudinal section in the subarctic Pacific in 2012 and along a north-south longitudinal section in the south Pacific Ocean and the Antarctic Sea in 2014 to 2015, respectively. We occupied total 50 stations for the measurement of trace metals such as Fe, Zn, and Cu in seawater from surface to bottom. Obtained data have been registered to the GEOTRACES data centre.
Pathfinding research for marine geochemistry of palladium, platinum and gold
Grant number:22651006
2010 - 2011
System name:Grants-in-Aid for Scientific Research
Research category:Grant-in-Aid for Challenging Exploratory Research
Awarding organization:Japan Society for the Promotion of Science
SOHRIN Yoshiki, NORISUYE Kazuhiro, FIRDAUS M. lutfi, YAMAMOTO Jun
Grant amount:\3430000 ( Direct Cost: \3100000 、 Indirect Cost:\330000 )
Since the concentrations of palladium, platinum and gold is extremely low in natural waters and it is difficult to determine them, their cycling in the hydrosphere is not known well. In the present study, we have investigated preconcentration using an ethylenediamine-chelating resin and highly sensitive measurement using a high resolution ICP mass spectrometer in order to develop a novel analytical method with high precision. Although we have succeeded in suppressing contamination during the preconcentration, some problems are still unsolved in preconcentration from a large volume sample.
Development of precise isotopic analysis for founding heavy stable isotope? marine chemistry
Grant number:21350042
2009 - 2011
System name:Grants-in-Aid for Scientific Research
Research category:Grant-in-Aid for Scientific Research (B)
Awarding organization:Japan Society for the Promotion of Science
SOHRIN Yoshiki, HIRATA Takafumi, NORISUYE Kazuhiro, NAKAGAWA Yusuke, MORISHI Mayui, TAKANO Shotaro, ICHIWAKI Shouhei
Grant amount:\19240000 ( Direct Cost: \14800000 、 Indirect Cost:\4440000 )
Isotopic ratios of heavy elements are widely noticed as novel measures in marine chemistry. In the present study, we have analyzed seawater samples collected from the Pacific, Southern and Atlantic Oceans, confirming that the isotopic composition of dissolved molybdenum is uniform throughout the global ocean. We developed a precise method for isotopic analysis of dissolved copper in seawater. We also optimized an isotopic analysis method for molybdenum and tungsten in sediments. The isotopic ratios of these elements are promising as a tracer of biogeochemical cycling and a proxy in paleoceanography.
海洋における人為起源微量元素鉛同位体の迅速精密分析法の開発
2008 - 2009
System name:その他の研究制度
Grant type:Competitive
Development of a rapid and precise analytical method for anthropogenic trace element lead isotopes in the ocean
2008 - 2009
System name:The Other Research Programs
Grant type:Competitive
海洋における二価鉄の定量法の開発とその動態解明
2007 - 2009
System name:その他の研究制度
Grant type:Competitive
Development of a method for determination of Fe(II) in the ocean and research on its behaviors
2007 - 2009
System name:The Other Research Programs
Grant type:Competitive
海水中現場濃縮に基づく不安定溶存種二価鉄の定量分析法の開発
Grant number:18710008
2006 - 2007
System name:科学研究費助成事業
Research category:若手研究(B)
Awarding organization:日本学術振興会
則末 和宏
Grant amount:\3500000 ( Direct Cost: \3500000 )
1.鉄は,海洋表層における必須微量元素として生物生産を制限する因子であり,地球表層の炭素循環に大きな影響を及ぼしている.海水等の自然水中で安定な化学種は三価鉄である.二価鉄は水中の酸素等によって速やかに酸化されるため不安定であり,二価鉄を精確に定量することは極めて困難である.本研究では,海洋等の水圏における二価鉄の定量分析法の開発を目的として,二価鉄に対して高選択的に錯形成する配位子を用いた固相抽出分離を検討した.
・二価鉄と安定な錯体を形成する有機配位子(1,10-フェナントロリン,フェロジン,ビピリジン,ターピリジン)を用いた固相抽出を比較検討した結果,ターピリジンを用いた場合に最も効果的に二価と三価の鉄を分離できることが分かった.ターピリジンを用いた固相抽出により,自然水のpH6-8を保った状態で二価鉄を100%回収し,かつ三価鉄を初量の数%以下に抑える分離条件を確立した.主な成果は,「11.研究発表」の学会発表において公表した.
2.海洋植物は鉄以外にも多くの微量元素を必要とする.生物活性微量元素は,植物プランクトンの生理活性や海洋生態系における群集構造に影響する.このため,鉄を含めた他の微量元素の研究も重要であり,これらに関する研究を実施した.
・ベーリング海の大陸棚における生物活性微量元素の断面分布を観測した.
・懸濁粒子態生物活性微量元素群の同時分析法を開発した.
・北太平洋亜寒帯域における不適合元素の分布を解明した.
これらの成果は以下の「11.研究発表」の雑誌論文に掲載された.
Interaction between Metallome and Proteome in the Marine Ecosystem
Grant number:16204046
2004 - 2006
System name:Grants-in-Aid for Scientific Research
Research category:Grant-in-Aid for Scientific Research (A)
Awarding organization:Japan Society for the Promotion of Science
SOHRIN Yoshiki, OKAMURA Kei, NORISUYE Kazuhiro, SUZUKI Koji, HASEGAWA Hiroshi, SOHRIN Rumi
Grant amount:\50310000 ( Direct Cost: \38700000 、 Indirect Cost:\11610000 )
1.Development of chemical speciation and in situ determination of bioactive trace metals
(1)Determination of suspended particulate Co, Ni, Cu, Zn, Cd and Pb has been developed.
(2)Determination of dissolved and acid-dissolvable Zr, Hf, Nb, Ta and W has been developed.
(3)In-situ flow analysis of alkalinity and total carbonate has been developed.
2.Development of analytical methods for enzymes and proteins of phytoplankton and bacteria
(1)Detection of Fe-S protein PsaC and PsbA(D1) in photosynthetic system has been developed.
(2)Anti-ferredoxin and anti-flavodoxin antibodies, which cross-react with ferredoxin and flavodoxin of marine diatoms, respectively, have been developed using synthetic peptides in order to estimate their Fe stress.
3.Observation of the variation and relationship of metallome and proteome
(1)Different distributions of Fe, Co, Ni, Cu, Zn and Cd in seawater between the Sulu Sea, South China Sea and Pacific Ocean were observed.
(2)During the second mesoscale iron enrichment experiments in the western subarctic North Pacific (SEEDS-II), the effects of iron enrichment on the phytoplankton community structure and the speciation of bioactive trace metals were examined.
(3)On the basis of analysis of photosynthetic proteins, Fe in seawater has been proved to be a major factor controlling the spring bloom of diatoms in the Oyashio region.
(4)Diurnal dynamics of biomass of nano-flagellates and ciliates in Suruga Bay was investigated.
(5)The effects of trace metals on the activity of extracellular enzymes of microbes have been proved.
4.Study on metal uptake mechanism of phytoplankton in culture
(1) The size distribution of Fe in culture media of phytoplankton was investigated. Fe ligands exuded from phytoplankton were analyzed by LC-MS.
(2)Membrane proteins revealed in red tide forming phytoplankton Prymnesium parvum under Fe deficiency were analyzed.
SDGsを支える化学
自然環境科学研究演習
環境政策論a
卒業論文II
卒業論文I
理学基礎演習
環境学演習
統合化学入門
環境ファシリテーター論及び演習
科学英語演習
無機化学I
環境ガバナンス概論
日本事情自然系A
課題研究B
課題研究C
課題研究(自然環境)A
卒業論文
海洋化学
環境政策論
課題研究
卒業論文Ⅰ
専門力アクティブ・ラーニング
卒業論文Ⅱ
化学基礎実習a
自然環境科学総論
理学スタディ・スキルズ
農学入門Ⅰ
農学入門Ⅱ
化学基礎実習b
自然環境科学実験C1
自然環境科学実験C2
課題研究C
課題研究A
総合力アクティブ・ラーニング
課題研究B
環境科学スタディスキルズ
課題研究(自然環境)
古環境学
グリーンケミストリー概説
環境化学特論Ⅳ
物質科学C
自然環境科学特論B
自然科学実験法
化学実験
環境科学特定演習Ⅰ
環境化学要論II
地球環境化学
基礎化学実験
自然環境科学概論C
自然環境科学実験C
環境科学セミナーⅠ
研究発表演習Ⅰ(学外発表)
環境科学総合演習Ⅰ
研究発表演習Ⅰ(中間発表)
環境科学特定研究Ⅰ