Updated on 2024/12/21

写真a

 
NORISUYE Kazuhiro
 
Organization
Academic Assembly Institute of Science and Technology CHIKYU SEIBUTSU KAGAKU KEIRETU Associate Professor
Graduate School of Science and Technology Environmental Science and Technology Associate Professor
Faculty of Science Department of Science Associate Professor
Title
Associate Professor
Homepage
http://www.sc.niigata-u.ac.jp/environment/organization/norisue-e.html
External link

Degree

  • 博士（理学） ( 2003.3   京都大学 )

  • 修士（理学） ( 1999.3   京都大学 )

Research Interests

  • 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

Research Areas

  • Environmental Science/Agriculture Science / Environmental dynamic analysis

Research History (researchmap)

  • Niigata University   Faculty of Science, Department of Environmental Science and Technology   Associate Professor

    2013.4

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  • Institute for Chemical Research, Kyoto University   Hydrospheric Environment Analytical Chemistry   Assistant Professor

    2007.4 - 2013.3

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  • Institute for Chemical Research, Kyoto University   Hydrospheric Environment Analytical Chemistry   Assistant Professor

    2006.4 - 2007.3

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  • Institute for Chemical Research, Kyoto University   Hydrospheric Environment Analytical Chemistry   Research Associate

    2001.4 - 2006.3

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Research History

  • 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

Education

  • Kyoto University   Graduate School of Science   Division of Chemistry

    1999.4 - 2002.3

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    Country： Japan

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  • Kyoto University   Graduate School of Science   Division of Chemistry

    1997.4 - 1999.3

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  • Kyoto University   Faculty of Science   Department of Chemistry

    1993.4 - 1997.3

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Professional Memberships

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Papers

  • Distinct basin-scale-distributions of aluminum, manganese, cobalt, and lead in the North Pacific Ocean Reviewed

    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

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Elsevier {BV}  

    Aluminum (Al), manganese (Mn), cobalt (Co), and lead (Pb) are key trace elements in seawater and thus significant in chemical oceanography research. However, although all of these elements are highly scavenged in the ocean, only a few studies focus on the intercomparison of their distributions. Here, we report the basin-scale and full-depth sectional distributions of these elements observed during three GEOTRACES Japan cruises in the North Pacific. We confirmed that a surface maximum of the dissolved (d) species is not a common feature for the four elements and that the d species have the lowest concentrations in the Pacific Deep Water (PDW) as compared to other oceans. The elements showed different speciations and distributions. The fraction of labile particulate (lp) species was calculated as the difference between the total dissolvable (td) species and d species. The lpM/tdM ratio, where M refers to an element, is highest for Al, at 0.66 ± 0.31 (average ± sd, n = 489), and lowest for Pb, at 0.02 ± 0.08 (n = 575). Further, the distribution of each element is uniquely related to ocean circulation. The tdAl concentration is high in the Equatorial Under Current (EUC), the North Equatorial Current (NEC), and the Lower Circumpolar Deep Water (LCDW). Manganese is supplied from reductive sources such as sediments on the continental shelves around the northern boundary. Cobalt is concentrated in the North Pacific Intermediate Water (NPIW) and in the Equatorial Pacific Intermediate Water (EqPIW) owing to the combined effects of supply from the continental shelves, biogeochemical cycling, and scavenging. Lead shows a subsurface maximum centered at ∼35°N and ∼200 m depth, implying an association with the formation of the Subtropical Mode Water (SMW) and the Central Mode Water (CMW). Although the subsurface Pb maximum in the Atlantic has diminished over the last three decades owing to the ban on leaded gasoline use, it has been sustained in the North Pacific through the growth of other anthropogenic sources in Asia and Russia. We propose that the enrichment factor of dM, defined as EF(dM) = (dM/dAl)seawater/(M/Al)upper crust, where (M/Al)upper crust is the molar ratio in upper crustal abundance, can be a good parameter for the sources. The median is 1.3 × 102 (n = 436) for EF(dMn), 3.2 × 102 (n = 430) for EF(dCo), and 1.2 × 103 (n = 413) for EF(dPb). The EF(dPb) found in this study is on the same order of magnitude as the EF values for aerosols found in the literature, suggesting that the deposition of aerosols is a major source for dPb. Because EF(dMn) and EF(dCo) are ten to hundred times higher than the EF for aerosols, sources other than the aerosol deposition are more significant contributors to the concentrations of Mn and Co.

    DOI： 10.1016/j.gca.2019.03.038

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  • 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

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：SPRINGER  

    Using a clean seawater sampling system for trace metals onboard the R. V. Shinsei-Maru, newly launched in 2013, we investigated the vertical distributions of dissolved iron and zinc in Sagami Bay and the Izu-Ogasawara Trench. We applied appropriate clean sampling and filtering processes for trace metals, so that uncontaminated seawater samples were successfully collected. The distribution of zinc in the trench area was similar to that of silicate and the same as that previously reported in the subtropical North Pacific. There were spatial variations in the iron (Fe) distribution in the trench areas. We used previously reported information about biogeochemical cycling in the trench area, and found that Fe has a residence time of 29 years in the water column. The short residence time of Fe (29 years) corresponds to the vertical variations of dissolved Fe in the water column.

    DOI： 10.1007/s10872-016-0407-8

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  • 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

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：PERGAMON-ELSEVIER SCIENCE LTD  

    Pb and Pb isotope ratios in the modern ocean have been altered significantly by anthropogenic Pb inputs over the past century. Most studies of anthropogenic Pb in the ocean have focused on the North Atlantic and North Pacific Oceans, and the impact of anthropogenic Pb inputs to the Indian Ocean and processes controlling the distribution of Pb in the Indian Ocean are poorly known. This study presents the Pb and Pb isotopic composition (Pb-206/Pb-207, Pb-208/Pb-207) of 11 deep stations from the Indian Ocean Japanese GEOTRACES cruise (KH-09-5), from the Bay of Bengal and Arabian Sea to the Southern Ocean (62 degrees S). The Pb isotope ratios of the Indian Ocean range 1.140-1.190 for Pb-206/Pb-207 and 2.417-2.468 for Pb-208/Pb-207, with lower ratios appearing in the shallow waters of the northern Indian Ocean and higher ratios appearing in the deep layers of the Southern Ocean. This result agrees with a previous study on Pb concentrations (Echegoyen et al., 2014) showing that the Indian Ocean, particularly its northern part, is largely perturbed by anthropogenic Pb inputs. Pb-206/Pb-207 and Pb-208/Pb-207 of the Indian sector Southern Ocean are still lower than natural Pb, showing this region was also affected by anthropogenic Pb. Anomalously low or high Pb-206/Pb-207 and Pb-208/Pb-207 were observed in the thermocline and shallow waters of the southern Indian Ocean and the Arabian Sea, which are ascribed to water mass distribution (e.g., Subantarctic Mode Water) and evolving Pb isotope ratios of this region as dominant anthropogenic Pb sources change. Pb-206/Pb-207 and Pb-208/Pb-207 in the Bay of Bengal are higher than those in the Arabian Sea, which might be the result of the anthropogenic Pb inputs from different provenance or seawater exchanging Pb isotopes with natural particles derived from rivers and/or sediments at the basin boundaries. (C) 2015 Elsevier Ltd. All rights reserved.

    DOI： 10.1016/j.gca.2015.08.013

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  • 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

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Publisher：Proceedings of the National Academy of Sciences  

    Significance

    Humans have altered the earth surface environment by massive injection of certain chemicals into our air and water. In some cases these injections are detrimental to environmental health and must be monitored to limit the damage (e.g., freons and the ozone layer); in other cases (e.g., freon dissolving into the ocean) there are no harmful consequences, but the chemicals are useful as tracers of ocean circulation patterns. Lead remains a major hazard when it is proximate to humans (e.g., plumbing, housepaint, and contaminated soils); in the open ocean, lead serves as an inadvertent experiment demonstrating how metals move through the marine environment. To our knowledge, this study is the first to examine the fate of human-injected lead in the Indian Ocean.

    DOI： 10.1073/pnas.1417370111

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  • 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

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    Authorship：Last author   Publishing type：Research paper (scientific journal)   Publisher：The Oceanography Society  

    DOI： 10.5670/oceanog.2014.10

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  • 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

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    DOI： 10.1016/j.aca.2012.03.042

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  • 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

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    DOI： 10.1021/ja309845k

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  • 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

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    Language：English   Publisher：Geochemical Society of Japan  

    DOI： 10.2343/geochemj.1.0158

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  • Erratum to Stoichiometry among bioactive trace metals in seawater on the Bering Sea shelf (J Oceanogr, (2011), 67, (747-764), 10.1007/s10872-011-0070-z) Reviewed

    Cid, A. P, Urushihara, S, Minami, T, Norisuye, K, Sohrin, Y

    Journal of Oceanography   68 ( 3 )   483 - 484   2012

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1007/s10872-012-0105-0

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    Other Link： http://link.springer.com/article/10.1007/s10872-012-0105-0/fulltext.html

  • 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

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：SPRINGER  

    The distribution of Al, Mn, Fe, Co, Ni, Cu, Zn, Cd, and Pb in seawater was investigated on the Bering Sea shelf (56-64 degrees N, 165-169 degrees W) in September 2000. The unfiltered and filtered seawater samples were used for determination of total dissolvable (TD) and dissolved (D) metals (M), respectively. The TD-M concentrations were generally higher than in the Pacific Ocean. TD-Cd was highest in deep water of the outer shelf domain and dominated by dissolved species. The other TD-M were highest at stations close to the Yukon River delta and had higher fractions of labile particulate (LP) species that were obtained as the difference between TD-M and D-M. Dissolved Al, Ni, and Cu were characterized by input from the Yukon River. Dissolved Mn and Co showed maximums on the bottom of the coastal domain, suggesting influence of sedimentary Mn reduction. The correlations of D-Zn, D-Cd, and macronutrients indicated their distributions were largely controlled through uptake by microorganisms and remineralization from settling particles. All these three processes (river input, sedimentary reduction, and biogeochemical cycle) had an influence on the distribution of D-Fe. D-Pb was fairly uniformly distributed in the study area. The stoichiometry of D-M in the Bering Sea shelf showed enrichment of Co and Pb and depletion of Ni, Cu, Zn, and Cd compared with that in the North Pacific. The LP-M/LP-Al ratio revealed significant enrichment of the other eight metals relative to their crustal abundance, suggesting importance of formation of Fe-Mn oxides and adsorption of trace metals on the oxides.

    DOI： 10.1007/s10872-011-0070-z

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  • 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

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：NATURE PUBLISHING GROUP  

    Understanding the circulation of water masses in the world's oceans is critical to our knowledge of the Earth's climate system. Trace elements and their isotopes have been explored as tracers for the movement of water masses(1). One type of candidate elements(2) are the high-field-strength elements zirconium (Zr), hafnium (Hf), niobium (Nb) and tantalum (Ta). Here we measure the distributions of dissolved Zr, Hf, Nb and Ta along two meridional sections in the Pacific Ocean that extend from 65 degrees to 10 degrees S and from 10 degrees to 50 degrees N. We find that all four elements tend to be depleted in surface water. In the deep oceans, their concentrations rise along our transects from the Southern Ocean to the North Pacific Ocean, and show strong correlations with the concentration of silicate. These results indicate that terrigenous sources are important to the budget of Zr, Hf, Nb and Ta in sea water, compared with hydrothermal input. Unexpectedly, the weight ratios for Zr/Hf fall between 45 and 350 and those for Nb/Ta between 14 and 85 in Pacific sea water, higher than the ratios observed in fresh water, in the silicate Earth or in chondritic meteorites. We conclude that the fractionation of Zr/Hf and Nb/Ta ratios will be useful for tracing water masses in the ocean.

    DOI： 10.1038/NGEO1114

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  • Development of the multielemental determination method for bioactive trace metals in open ocean seawater and its application to international intercalibration Reviewed

    Minami, T, Higo, E, Nakatsuka, S, Cid, A. P., Vu, H. T. D, Norisuye, K, Sohrin, Y

    Bunseki Kagaku   59 ( 12 )   1087 - 1096   2010

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The Japan Society for Analytical Chemistry  

    Bioactive trace metals are essential or highly toxic elements for organisms. The most important bioactive trace elements in the ocean environment are Al, Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb, whose concentrations in seawater are generally less than tens of nmol kg<sup>−1</sup>. In previous methods, there were problems, such as contamination, interferences by major constituents and a non-quantitative recovery of the target metals, especially Al and Mn. We developed a novel method for analyzing the 9 elements based on solid-phase extraction-inductively coupled plasma mass spectrometry (ICP-MS). In this method, a column packed with chelating absorbent, which had ethylenediaminetriacetic and iminodiacetic acid groups, was used in a closed concentration system. The proposed method was able to concentrate all of the 9 elements simultaneously and quantitatively, and to remove the major constituents in seawater. The procedural blanks for Mn, Co, Ni, Cu and Cd were less than the detection limits for ICP-MS (3 times the standard deviations of 1 mol L<sup>−1</sup> HNO<sub>3</sub>), and those for Al, Fe, Zn and Pb were 0.14, 0.03, 0.07 and 0.003 nmol kg<sup>−1</sup>, respectively. The overall detection limits for Al, Mn, Fe, Co, Ni, Cu, Zn, Cd and Pb were 0.24, 0.01, 0.04, 0.002, 0.01, 0.01, 0.06, 0.01 and 0.001 nmol kg<sup>−1</sup>, respectively. In this paper, we review the development of this method and its application to international intercalibration using open-ocean seawater.

    DOI： 10.2116/bunsekikagaku.59.1087

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    Other Link： https://jlc.jst.go.jp/DN/JALC/00362207383?from=CiNii

  • 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

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  • 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

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.marchem.2008.05.001

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  • Multielemental Determination of GEOTRACES Key Trace Metals in Seawater by ICPMS after Preconcentration Using an Ethylenediaminetriacetic Acid Chelating Resin Reviewed

    Yoshiki Sohrin, Shouhei Urushihara, Seiji Nakatsuka, Tomohiro Kono, Eri Higo, Tomoharu Minami, Kazuhiro Norisuye, Shigeo Umetani

    Analytical Chemistry   80 ( 16 )   6267 - 6273   2008.7

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    Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

    DOI： 10.1021/ac800500f

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  • 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

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    Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1007/s10872-008-0019-z

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    Other Link： http://link.springer.com/article/10.1007/s10872-008-0019-z/fulltext.html

  • 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

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    Language：Japanese   Publisher：Japan Society for Biomedical Research on Trace Elements  

    Solid phase extraction with chelating adsorbents is useful for the preconcentration of trace metals in seawater. We have examined a number of chelating adsorbents and developed simultaneous determination methods for trace metals in seawater on the basis of preconcentration by solid phase extraction and determination by ICP-MS. Here we review the results on the determination of trace bioactive metals(Fe, Co, Ni, Cu, Zn, Cd and Pb)using fluoride-containing metal alkoxide glass immobilized 8-hydroxyquinoline(MAF-8HQ)and the determination of the second and third transition series metals(Zr, Hf, Nb, Ta, Mo and W)using vinyl polymer resin immobilized 8-hydroxyquinoline(TSK-8HQ).

    DOI： 10.11299/brte.18.319

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  • 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

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.aca.2007.04.057

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  • 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

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    DOI： 10.1016/j.aca.2006.10.033

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  • 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

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    Authorship：Lead author   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/j.dsr2.2006.04.019

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  • Large volume preconcentration and purification for determining the240Pu/239Pu isotopic ratio and 238Pu/239+240Pu alpha-activity ratio in seawater Reviewed

    K. Norisuye, K. Okamura, Y. Sohrin, H. Hasegawa, T. Nakanishi

    Journal of Radioanalytical and Nuclear Chemistry   267 ( 1 )   183 - 193   2006.12

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    Authorship：Lead author   Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1007/s10967-006-0026-8

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    Other Link： http://link.springer.com/article/10.1007/s10967-006-0026-8/fulltext.html

  • 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

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    Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1007/s10201-003-0111-4

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    Other Link： http://link.springer.com/article/10.1007/s10201-003-0111-4/fulltext.html

  • 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

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    Publishing type：Research paper (scientific journal)   Publisher：Geochemical Society of Japan  

    DOI： 10.2343/geochemj.38.535

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  • 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

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：CHEMICAL SOC JAPAN  

    The sample, preparation and analytical methodology are described for determining minor and trace elements (Al, As, Ba, Cd, Co, Cr, Fe, Mg, Mn, Mo, Ni, Sb, Sr, U, V, W, Y and Zn) in biogenic carbonate minerals of coccolithophores. Coccolith particles isolated from cultivated coccolithophores were purified by centrifugation and resuspension with 0.5 mM sodium hydrogencarbonate solutions (1 M = 1 mol L-1). The concentrations of the elements in the final solutions were determined by high-resolution inductively coupled plasma mass spectrometry and inductively coupled plasma atomic emission spectrometry. The analytical results of coccolith particles suggest that the molar ratios of the minor and trace elements in coccoliths vary with the compositions of the medium in which the coccolithophores are grown.

    DOI： 10.1246/bcsj.76.115

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  • 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

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    Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/s0045-6535(00)00137-5

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  • 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

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    Authorship：Lead author   Publishing type：Research paper (scientific journal)   Publisher：Elsevier BV  

    DOI： 10.1016/s0039-9140(00)00548-8

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Books

  • プルトニウム-人類の影響

    海と湖の化学  2005 

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MISC

  • Multielemental determination and intercalibration of bioactive trace metals

    38 ( 6 )   346 - 351   2016.6

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  • Inter-basin fractionation on the distribution of bioactive trace metals in seawater

    38 ( 6 )   314 - 322   2016.6

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  • 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

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    Language：Japanese   Publishing type：Article, review, commentary, editorial, etc. (trade magazine, newspaper, online media)  

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  • 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

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    Language：English   Publishing type：Article, review, commentary, editorial, etc. (bulletin of university, research institution)  

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  • 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

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    It is widely recognized that the natural isotopic variation of Mo can provide crucial information about the geochemical circulation of Mo, and the ocean is an important reservoir of Mo. To obtain precise isotopic data on Mo in seawater samples using multiple collector-inductively coupled plasma mass spectrometiy (MC-ICPMS), we have developed a preconcentration technique using 8-hydroxyquinoline bonded covalently to a vinyl polymer resin (TSK-8HQ). By optimizing the procedure, Mo in seawater could be effectively separated from matrix elements such as alkali, alkaline earth, and transition metals. With this technique, even with a 50-fold enrichment factor, the changes in the (98)Mo/(95)Mo ratio during preconcentration were smaller than twice the standard deviation (SD) in this study. Mass discrimination of Mo isotopes during the measurement was externally corrected for by normalizing (86)Sr/(88)Sr to 0.1194 using an exponential law. We evaluated delta(98)/(95)Mo to a precision of +/- 0.08 parts per thousand (+/- 2 SD); this value was found to be less than one-third of previous reported values. Moreover, we were able to determine an accurate ratio for every pair of stable Mo isotopes, which was impossible with previous methods owing to the isobaric interference from the external elements (Zr and Ru). In this study, delta(92)/(98)Mo in seawater was first determined so that it had the smallest relative error. We applied the proposed method to four kinds of seawater samples. The Mo compositions were constant among them, with average delta(98)/(95)Mo and delta(92)/(98)Mo values of 2.45 +/- 0.11 and -4.94 +/- 0.09 parts per thousand ( +/- 2 SD), respectively. Our data indicate that seawater is enriched in heavy Mo isotopes than previously reported.

    DOI： 10.1021/ac801383t

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  • 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

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  • 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

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  • 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

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  • 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

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  • Mo isotopic compositions of seawater and land water

    Nakagawa Yusuke

    Abstracts of Annual Meeting of the Geochemical Society of Japan   55   60 - 60   2008

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    Publisher：GEOCHEMICAL SOCIETY OF JAPAN  

    DOI： 10.14862/geochemproc.55.0.60.0

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  • 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

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  • 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

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  • 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

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  • 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

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  • 重金属 多元素同時分析

    第5版実験化学講座   293-298   2007

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  • 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

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  • 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

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    DOI： 10.1016/j.gca.2006.06.352

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  • 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

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  • 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

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  • 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

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  • 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

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  • 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

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  • 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

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  • 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

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  • 海水中プルトニウムの同位体組成を用いる起源解析

    則末 和宏

    海洋化学研究   17, 91-96 ( 2 )   91 - 96   2004

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  • 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

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  • 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

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  • Development of a deep-sea in situ Mn analyzer and its application for hydrothemal plume observation / Distribution of trace bioelements in the subarctic North Pacific Ocean and the Bering Sea (the R/V Hakuho-Maru Cruise KH-97-2) (INTERFACE SCIENCE - Hydrospheric Environment Analysis)

    SOHRIN Yoshiki, UMETANI Shigeo, SASAKI Yoshihiro, OKAMURA Kei, NORISUYE Kazuhiro

    ICR annual report   8   14 - 15   2002.3

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  • Determination of trace metals in the ocean by MAF-8HQ column extraction-ICP-MS（共著）

    Analytical Sciences Supplement   17, 1-4   2001

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  • Determination of 240Pu/239Pu ratio in the ocean by using HR-ICP-MS（共著）

    Analytical Sciences Supplement   17, 29-32   2001

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Presentations

  • 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

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    Language：Japanese  

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  • 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

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    Event date： 2016

    Language：Japanese  

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  • 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

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  • 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

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  • 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

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  • 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

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    Event date： 2009

    The major activity of the international program GEOTRACES is to elucidate the global oceanic distribution of key parameter, such as trace elements Al, Mn, Fe, Cu, Zn, Cd, and stable isotopic compositions. We are targeting

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  • 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

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    Event date： 2008

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Research Projects

  • 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

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    Grant amount：\39260000 （ Direct Cost: \30200000 、 Indirect Cost：\9060000 ）

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  • 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

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    Grant amount：\17290000 （ Direct Cost: \13300000 、 Indirect Cost：\3990000 ）

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  • 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

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    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.

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  • 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

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    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.

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  • 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

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    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.

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  • 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

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    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.

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  • 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

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  • 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

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  • 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

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    Grant type：Competitive

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  • 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

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  • 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

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    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.

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  • 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

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    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.

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Teaching Experience

  • SDGsを支える化学

    2024
    Institution name：新潟大学

  • 課題研究(自然環境)B

    2024
    Institution name：新潟大学

  • 自然環境科学研究演習

    2023
    Institution name：新潟大学

  • 環境政策論a

    2023
    Institution name：新潟大学

  • 環境学演習

    2022
    Institution name：新潟大学

  • 卒業論文I

    2022
    Institution name：新潟大学

  • 卒業論文II

    2022
    Institution name：新潟大学

  • 理学基礎演習

    2022
    Institution name：新潟大学

  • 統合化学入門

    2022
    Institution name：新潟大学

  • 環境ファシリテーター論及び演習

    2021
    Institution name：新潟大学

  • 科学英語演習

    2021
    Institution name：新潟大学

  • 無機化学I

    2021
    Institution name：新潟大学

  • 環境ガバナンス概論

    2021
    Institution name：新潟大学

  • 日本事情自然系A

    2021
    -
    2022
    Institution name：新潟大学

  • 課題研究B

    2021
    Institution name：新潟大学

  • 課題研究C

    2021
    Institution name：新潟大学

  • 卒業論文

    2020
    Institution name：新潟大学

  • 課題研究(自然環境)A

    2020
    Institution name：新潟大学

  • 海洋化学

    2020
    Institution name：新潟大学

  • 環境政策論

    2020
    -
    2022
    Institution name：新潟大学

  • 課題研究

    2020
    -
    2021
    Institution name：新潟大学

  • 卒業論文Ⅰ

    2020
    Institution name：新潟大学

  • 専門力アクティブ・ラーニング

    2020
    Institution name：新潟大学

  • 卒業論文Ⅱ

    2020
    Institution name：新潟大学

  • 自然環境科学総論

    2018
    Institution name：新潟大学

  • 化学基礎実習a

    2018
    Institution name：新潟大学

  • 理学スタディ・スキルズ

    2018
    -
    2021
    Institution name：新潟大学

  • 農学入門Ⅰ

    2018
    -
    2020
    Institution name：新潟大学

  • 農学入門Ⅱ

    2018
    -
    2020
    Institution name：新潟大学

  • 化学基礎実習b

    2017
    Institution name：新潟大学

  • 自然環境科学実験C1

    2017
    Institution name：新潟大学

  • 自然環境科学実験C2

    2017
    Institution name：新潟大学

  • 課題研究C

    2017
    -
    2021
    Institution name：新潟大学

  • 総合力アクティブ・ラーニング

    2017
    -
    2021
    Institution name：新潟大学

  • 課題研究B

    2017
    -
    2021
    Institution name：新潟大学

  • 課題研究A

    2017
    -
    2021
    Institution name：新潟大学

  • 環境科学スタディスキルズ

    2016
    Institution name：新潟大学

  • 課題研究(自然環境)

    2015
    Institution name：新潟大学

  • 古環境学

    2014
    Institution name：新潟大学

  • 環境化学特論Ⅳ

    2014
    Institution name：新潟大学

  • グリーンケミストリー概説

    2014
    -
    2023
    Institution name：新潟大学

  • 物質科学C

    2014
    -
    2021
    Institution name：新潟大学

  • 自然環境科学特論B

    2014
    -
    2020
    Institution name：新潟大学

  • 自然科学実験法

    2014
    -
    2017
    Institution name：新潟大学

  • 環境科学特定演習Ⅰ

    2014
    Institution name：新潟大学

  • 化学実験

    2014
    Institution name：新潟大学

  • 地球環境化学

    2013
    Institution name：新潟大学

  • 環境化学要論II

    2013
    Institution name：新潟大学

  • 基礎化学実験

    2013
    -
    2016
    Institution name：新潟大学

  • 自然環境科学実験C

    2013
    -
    2016
    Institution name：新潟大学

  • 自然環境科学概論C

    2013
    -
    2016
    Institution name：新潟大学

  • 環境科学セミナーⅠ

    2013
    -
    2015
    Institution name：新潟大学

  • 研究発表演習Ⅰ(中間発表)

    2013
    -
    2015
    Institution name：新潟大学

  • 環境科学総合演習Ⅰ

    2013
    -
    2015
    Institution name：新潟大学

  • 研究発表演習Ⅰ(学外発表)

    2013
    -
    2015
    Institution name：新潟大学

  • 環境科学特定研究Ⅰ

    2013
    -
    2014
    Institution name：新潟大学

▶ display all