Development of hydrothermal-derived trace metals monitoring method in the ocean by using the in-situ auto analyzer

• Project/Area Number: 24310006
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: The University of Tokyo
• Principal Investigator: Hajime Obata 東京大学, 大気海洋研究所, 准教授 (90334309)
• Co-Investigator(Kenkyū-buntansha): OKAMURA Kei 高知大学, 教育研究部総合科学系複合領域科学部門, 准教授 (70324697) ; MARUO Masahiro 滋賀県立大学, 環境科学部, 准教授 (80275156) ; GAMOS Toshitaka 東京大学, 大気海洋研究所, 教授 (70143550)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000); Fiscal Year 2015: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2014: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000); Fiscal Year 2013: ¥6,890,000 (Direct Cost: ¥5,300,000、Indirect Cost: ¥1,590,000); Fiscal Year 2012: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
• Keywords: 熱水プルーム / 鉄 / 亜鉛 / 硫化物 / 有機配位子 / 現場型自動分析計 / 自動分析装置 / 海底熱水活動 / 微量金属元素 / 有機錯体 / 鉄(II) / 錯生成

Outline of Final Research Achievements

We investigated distributions and biogeochemical cycles of trace metals in hydrothermal plumes that have strong influences on dissolved iron budget in the ocean. We first developed a correction method of Fe(II) measurements in hydrothermal plumes by using dissolved oxygen and sulfide concentrations in water samples. Using this correction method, we revealed the vertical Fe(II) distribution at the Juan de Fuca Ridge more accurately. On the other hand, zinc speciation in seawater was examined in the coastal hydrothermal area in Tachibana Bay in Nagasaki, Japan. The Zn distribution was seemingly regulated by existing sulfides and organic ligands in seawater. Moreover, we obtained a vertical Fe(II) distribution to a depth of 1500m in the South Pacific Ocean continuously with an in-situ auto analyzer.

Research Products

• [Journal Article] Distribution and speciation of dissolved zinc in the western North Pacific and its adjacent seas. (2015)
  • Author(s): Kim, T-J., Obata, H., Kondo, Y., Ogawa, H., Gamo, T.
  • Journal Title: Marine Chemistry Volume: 173 Pages: 330-341
  • DOI: 10.1016/j.marchem.2014.10.016
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Sulfides in oxic seawater over the submarine hydrothermal area of Kikai Caldera south of Kyushu Island, Japan. (2015)
  • Author(s): N. Nakayama, K. Shirai, Y. Sano, T. Gamo, H. Obata
  • Journal Title: Geochemical Journal Volume: 49 Issue: 4 Pages: e1-e7
  • DOI: 10.2343/geochemj.2.0374
  • NAID: 130005092564
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Dissolved Zn and its speciation in the northeastern Indian Ocean and the Andaman Sea. (2015)
  • Author(s): Kim, T-J., Obata, H., and Gamo, T.
  • Journal Title: Frontiers in Marine Science Volume: 2 Pages: 1-14
  • DOI: 10.3389/fmars.2015.00060
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Impact of anthropogenic Pb and ocean circulation on the recent distribution of Pb isotopes in the Indian Ocean. (2015)
  • Author(s): Lee, J-M., Boyle, E. A., Gamo T., Obata, H., Norisuye, K., and Echegoyen, Y.
  • Journal Title: Geochimica et Cosmochimica Acta Volume: 170 Pages: 126-144
  • DOI: 10.1016/j.gca.2015.08.013
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Development of a deep-sea hydrogen sulfide ion sensor and its application for submarine hydrothermal plume exploration (2015)
  • Author(s): Okamura, K., T. Sugiyama, T. Noguchi, T. Fukuba, and K. Okino
  • Journal Title: GEOCHEMICAL JOURNAL Volume: 49 Issue: 6 Pages: 603-611
  • DOI: 10.2343/geochemj.2.0391
  • NAID: 130005112458
  • ISSN: 0016-7002, 1880-5973
  • Peer Reviewed / Open Access
• [Journal Article] Sampling and onboard analytical methods for determining subnanomolar concentrations of zinc in seawater. (2015)
  • Author(s): Kim, T., H. Obata, T. Gamo and J. Nishioka
  • Journal Title: Limnology and Oceanography: Methods Volume: 13 Issue: 1 Pages: 30-39
  • DOI: 10.1002/lom3.10004
  • Peer Reviewed
• [Journal Article] Precise determination of dissolved platinum in seawater of the Japan Sea, the Sea of Okhotsk, and the western North Pacific (2014)
  • Author(s): Suzuki, A., Obata, H., Okubo, A., Gamo, T.
  • Journal Title: Mar. Chem. Volume: 166 Pages: 114-121
  • DOI: 10.1016/j.marchem.2014.10.003
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Molecular hydrogen and carbon monoxide in seawater in an area adjacent to Kuroshio and Honshu Island in Japan (2014)
  • Author(s): Kawagucci, S., Narita, T., Obata, H., Ogawa, H., and Gamo, T.
  • Journal Title: Mar. Chem. Volume: 164 Pages: 75-83
  • DOI: 10.1016/j.marchem.2014.06.006
  • Peer Reviewed
• [Journal Article] Determination of picomolar beryllium levels in seawater with inductively coupled plasma mass spectrometry following silica-gel preconcentration. (2014)
  • Author(s): Tazoe, H., T. Yamagata, Y. Sakuma, R. Watanabe, T. Matsumura, H. Obata and H. Nagai
  • Journal Title: Analytica Chimica Acta Volume: 852 Pages: 74-81
  • DOI: 10.1016/j.aca.2014.09.015
  • Peer Reviewed
• [Journal Article] Rapid collection of iron hydroxide for determination of Th isotopes in seawater. (2013)
  • Author(s): Okubo A., H. Obata, M. Magara, T. Kimura, H. Ogawa
  • Journal Title: Analytica Chimica Acta Volume: 804 Pages: 120-125
  • DOI: 10.1016/j.aca.2013.10.004
  • Peer Reviewed
• [Journal Article] Shallow submarine hydrothermal activity with significant contribution of magmatic water producing talc chimneys in the Wakamiko Crater of Kagoshima Bay, southern Kyushu, Japan. (2013)
  • Author(s): Yamanaka, T., Maeto, K., Akashi, H., Ishibashi, J., Miyoshi, Y., Okamura, K., Noguchi, T., Kuwahara, Y., Toki, T., Tsunogai, U., Ura, T., Nakatani, T., Maki, T., Kubokawa, K., and Chiba, H.
  • Journal Title: J. Volcan. Geotherm. Res. Volume: (in press) Pages: 74-84
  • DOI: 10.1016/j.jvolgeores.2013.04.007
  • Peer Reviewed
• [Journal Article] Evidence of an extensive spread of hydrothermal dissolved iron in the Indian Ocean (2013)
  • Author(s): Nishioka, J., Obata, H., Tsumune, D.
  • Journal Title: Earth and Planetary Science Letters Volume: 361 Pages: 26-33
  • DOI: 10.1016/j.epsl.2012.11.040
  • Peer Reviewed
• [Journal Article] Geochemical origin of hydrothermal fluid methane in sediment-associated fields and its relevance with the geographical distribution of whole hydrothermal circulation (2012)
  • Author(s): Kawagucci, S., Ueno, Y., Takai, K., Toki, T., Ito, M., Inoue, K., Makabe, A., Yoshida, N., Muramatsu, Y., Takahata, N., Sano, Y., Narita, T., Teranishi, G., Obata, H., Nakagawa, S., Nunoura, T., and Gamo, T
  • Journal Title: Chem. Geol Volume: 339 Pages: 213-225
  • DOI: 10.1016/j.chemgeo.2012.05.003
  • Peer Reviewed
• [Presentation] Distribution and speciation of copper in seawater of the East China Sea. (2016)
  • Author(s): 黄国宏，金泰辰，小畑元，蒲生俊敬
  • Organizer: 日本海洋学会2016年度春季大会
  • Place of Presentation: 東京大学本郷キャンパス(東京)
  • Year and Date: 2016-03-15
• [Presentation] Dissolved zinc and its speciation in the coastal hydrothermal area of Japan (2016)
  • Author(s): Obata, H., T. Kim, S. Takeda and T. Gamo
  • Organizer: 2016 Ocean Sciences Meeting
  • Place of Presentation: New Orleans (USA)
  • Year and Date: 2016-02-22
  • Int'l Joint Research
• [Presentation] 北太平洋中深層における鉄(II) (2016)
  • Author(s): 小畑元, 高橋沙珠子, 蒲生俊敬, 西岡純
  • Organizer: 東京大学大気海洋研究所共同利用研究集会「太平洋南北断面観測による生物地球化学・生態系の統合研究」
  • Place of Presentation: 東京大学大気海洋研究所(千葉)
  • Year and Date: 2016-02-19
• [Presentation] 琵琶湖における溶存態鉄(II)・有機物の動態と光反応 (2015)
  • Author(s): 丸尾雅啓・大田啓一・早川和秀
  • Organizer: 2015年度日本地球化学会第62年会
  • Place of Presentation: 横浜国立大学(神奈川)
  • Year and Date: 2015-09-18
• [Presentation] 海水の化学センシングのための多連式採水器と化学センサ開発 (2015)
  • Author(s): 岡村慶
  • Organizer: 日本海洋工学会・海洋工学シンポジウム
  • Place of Presentation: 日本大学文理学部(東京)
  • Year and Date: 2015-08-07
• [Presentation] 相模湾および伊豆小笠原海溝域における鉄・亜鉛の挙動 (2014)
  • Author(s): 小畑 元,西岡 純,金 泰辰,則末 和宏,武田 重信, 涌田 陽平,蒲生 俊敬
  • Organizer: 2014年度日本地球化学会第61回年会
  • Place of Presentation: 富山大学共通教育棟(富山県)
  • Year and Date: 2014-09-16 – 2014-09-18
• [Presentation] Dissolved zinc and its speciation in the northeastern Indian Ocean and Andaman Sea. (2014)
  • Author(s): Kim, T., H. Obata, and T. Gamo
  • Organizer: 2014年度日本地球化学会第61回年会
  • Place of Presentation: 富山大学共通教育棟(富山県)
  • Year and Date: 2014-09-16 – 2014-09-18
• [Presentation] 西部北太平洋および縁辺海における白金の分布 (2014)
  • Author(s): 鈴木麻彩実,小畑元,大久保綾子,蒲生俊敬
  • Organizer: 2014年度日本地球化学会第61回年会
  • Place of Presentation: 富山大学共通教育棟(富山県)
  • Year and Date: 2014-09-16 – 2014-09-18
• [Presentation] Characterization of highly strong metal binding ligands in waters of natural lakes in Japan and Korea by electroanalysis (2014)
  • Author(s): Maruo, M., H. Obata, O. Mitamura, T. Akatsuka, N. Amahashi, H. Azumi, H.-S. Shin, Y. Seike, S. Sugahara, A. Yagi, M. Oyagi, N. Ishida, R. Somiya, J. K. Choi
  • Organizer: The 16th International Symposium on River and Lake Environments
  • Place of Presentation: LADENA Resort, Chuncheon (Korea)
  • Year and Date: 2014-08-24 – 2014-08-27
• [Presentation] Clean seawater sampling for trace metals during Japanese GEOTRACES cruises (2014)
  • Author(s): Obata, H., J. Nishioka, T. Kim, K. Norisuye, S. Takeda, Y. Wakuta and T. Gamo
  • Organizer: AOGS2014
  • Place of Presentation: ロイトン札幌(北海道)
  • Year and Date: 2014-07-28 – 2014-08-01
  • Invited
• [Presentation] Pseudopolarography による琵琶湖水中銅配位子の評価 (2014)
  • Author(s): 丸尾雅啓,小畑元
  • Organizer: JpGU Meeting 2014
  • Place of Presentation: パシフィコ横浜(神奈川県)
  • Year and Date: 2014-04-28 – 2014-05-02
• [Presentation] Distribution of iron (II) in the Northwestern Pacific. (2014)
  • Author(s): Obata, H., S. Takahashi, T. Gamo and J. Nishioka
  • Organizer: 2014 Ocean Science Meeting
  • Place of Presentation: Honolulu (USA)
• [Presentation] 新青丸KS-13-T3習熟航海におけるクリーンサンプリング (2014)
  • Author(s): 小畑元，西岡純，金泰辰，則末和宏，武田重信，湧田陽平，蒲生俊敬
  • Organizer: 2014年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学(東京都)
• [Presentation] ファン・デ・フーガ海嶺周辺海域付近の海水中の溶存鉄(II)の分布 (2013)
  • Author(s): 高橋沙珠子、金泰辰、小畑元、蒲生俊敬、西岡純
  • Organizer: 2013年度日本海洋学会春季大会
  • Place of Presentation: 東京海洋大学(東京都)
  • Year and Date: 2013-03-24
• [Presentation] 琵琶湖水中におけるFe(II)と有機錯体を形成する配位子の安定度定数決定法の検討 (2013)
  • Author(s): 小山和香、丸尾雅啓
  • Organizer: 第24回日本陸水学会近畿支部会研究発表会
  • Place of Presentation: 滋賀大学教育学部(滋賀県)
  • Year and Date: 2013-03-03
• [Presentation] 海水中の微量金属元素分析のためのクリーンサンプリング技術 (2013)
  • Author(s): 小畑元, 金泰辰, 蒲生俊敬, 西岡純
  • Organizer: 日本地球惑星科学連合 連合大会 2013年大会
  • Place of Presentation: 幕張メッセ(千葉県)
• [Presentation] Distribution of iron(II) in the northeastern Pacific around the Juan de Fuca Ridge. (2013)
  • Author(s): Takahashi, S., H. Obata, and T. Gamo
  • Organizer: 10th Annual Meeting of Asia Oceania Geosciences Society
  • Place of Presentation: Brisbane (Australia)
• [Presentation] Speciation of Iron(II) in oxic freshwater Lake Biwa, Japan (2013)
  • Author(s): Maruo, M., W. Oyama, H. Obata, K. Nagaoka, Y. Yaginuma, A. Mase and S. Wakiyama
  • Organizer: SIL 2013
  • Place of Presentation: Budapest (Hungary)
• [Presentation] Distribution of iron (II) in the Northwestern Pacific (2013)
  • Author(s): Obata, H., S. Takahashi, T. Gamo and J. Nishioka.
  • Organizer: Goldschmidt Conference 2013
  • Place of Presentation: Florence (Italy)
• [Presentation] 北太平洋の中深層における海水中の鉄(II) (2013)
  • Author(s): 小畑元，高橋沙珠子，金泰辰，蒲生俊敬
  • Organizer: 第60回日本地球化学会年会
  • Place of Presentation: 筑波大学(茨城県)
• [Presentation] ルミノール化学発光法による中深層水中の鉄(II)測定 (2013)
  • Author(s): 高橋沙珠子，小畑元，蒲生俊敬
  • Organizer: 2013年度日本海洋学会秋季大会
  • Place of Presentation: 北海道大学(北海道)
• [Presentation] 長崎県橘湾における海水中の亜鉛の存在状態 (2013)
  • Author(s): 小畑元, 金泰辰, 蒲生俊敬, 武田重信, 森井康宏
  • Organizer: 2013年度日本海洋学会秋季大会
  • Place of Presentation: 北海道大学(北海道)
• [Presentation] Newly developed 128 channel multi water sampler for AUV and ROV observation (2012)
  • Author(s): Okamura. K., Noguchi, T., Hatta. M., Kimoto.H., & Suzue. T
  • Organizer: ASLO Aquatic Science Meeting
  • Place of Presentation: 滋賀県立琵琶湖ホール(滋賀県)
  • Year and Date: 2012-07-12
• [Presentation] Comparison of Determination Methods of Iron(II) in Freshwater of Lake Biwa, Japan, in Consideration of Organic Complexation (2012)
  • Author(s): Masahiro Maruo. Hajime Obata, Yuta Yaginuma. Shin Wakiyama, Kazuki, Nagaoka. Akira Mase
  • Organizer: ASLO Aquatic Science Meeting
  • Place of Presentation: 滋賀県立琵琶湖ホール(滋賀県)
  • Year and Date: 2012-07-10
• [Presentation] 現場型自動分析装置を用いた海水中の極微量鉄(II)分析法の開発 (2012)
  • Author(s): 小畑元、脇山真、馬瀬輝、蒲生俊敬、丸尾雅啓、岡村慶、紀本英志
  • Organizer: 日本地球惑星科学連合2012年大会
  • Place of Presentation: 幕張メッセ(千葉県)
  • Year and Date: 2012-05-21
• [Presentation] 海水中溶存鉄の簡易型フロー式化学発光計測法の開発 (2012)
  • Author(s): 岡村慶, 野口拓郎, 八田万有美, 紀本英志, 北山紗織
  • Organizer: 第72回日本分析化学討論会
  • Place of Presentation: 鹿児島大学工学部郡元キャンパス(鹿児島県)
  • Year and Date: 2012-05-19
• [Book] 地球と宇宙の化学事典 (2012)
  • Author(s): 蒲生俊敬, 海老原充
  • Total Pages: 479
  • Publisher: 朝倉書店