Development of electrochemical sensor for precise determination of hydrogen sulfide to environmental monitoring

• Project/Area Number: 18681001
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Environmental dynamic analysis
• Research Institution: Kochi University
• Principal Investigator: OKAMURA Kei Kochi University, 教育研究部・自然科学系, 准教授 (70324697)
• Project Period (FY): 2006 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥29,770,000 (Direct Cost: ¥22,900,000、Indirect Cost: ¥6,870,000); Fiscal Year 2008: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000); Fiscal Year 2007: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000); Fiscal Year 2006: ¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
• Keywords: 海洋センサ / 硫化水素 / 海底熱水 / 現場計測 / センサ / 海洋化学 / 地球温暖化 / 地殻変動 / 内湾環境 / 酸化還元

Research Abstract

硫黄の天然水中での硫黄関連物質の挙動を把握することにで、地球環境変動の把握において重要な酸化還元状態に関するパラメーターを提供することが可能であるといえる。本研究では、水深4,000mの深海において、1年程度メンテナンスフリーの状態で作動する現場型化学センサの開発を行った。またここで開発した装置を用いて、実際の観測を行い、地殻変動や環境汚染検出を実施した。

Research Products

• [Journal Article] Geochemical characterization of newly discovered hydrothermal methane plumes over the Central Indian Ridge, (2008)
  • Author(s): S. Kawagucci, K. Okamura, K. Kiyota, D.Connelly, C. Boulart, A. Poonyth, T. Ura, U. Tsunogai, Y. Sano, K. Tamaki, T. Gamo
  • Journal Title: 18-20S, Geochemistry Geophysics Geosystems 9,Q10002
  • Peer Reviewed
• [Journal Article] Geochemical characterization of newly discovered hydrothermal methane plumes over the Central Indian Ridge, 18-20S (2008)
  • Author(s): Kawagucci
  • Journal Title: Geochemistry Geophysics Geosystems 9 Pages: 1-14
  • Peer Reviewed
• [Journal Article] In-situ Survey of Nanomolar Manganese in Seawater Using an Autono mous Underwater Vehicle around a Volcanic Crater at Teishi Knoll, Sagami Bay. Japan (2008)
  • Author(s): Doi
  • Journal Title: Journal of Oceanography 64 Pages: 471-477
  • Peer Reviewed
• [Journal Article] ectonic pumping : earthquake-indued chemical flux detected in situ by a submarine cable experiment in Sagami Bay (2007)
  • Author(s): Gamo, T., Okamura, K., Mitsuzawa, K. and Asakawa, K.,
  • Journal Title: Proceedings of the Japan Academy Series B,83 Pages: 199-204
  • Peer Reviewed
• [Journal Article] Tectonic pumping: earthquake-induced chemical flux deteced in situ by a marine cable experiment in Sagami Bay, Japan. (2007)
  • Author(s): Toshitaka, Gamo
  • Journal Title: Proceedings of the Japan Academy Series B 83 Pages: 199-204
  • Peer Reviewed
• [Journal Article] Simultaneous determination of suspended particulate trace metals (Co, Ni, Cu, Zn, Cd and Pb) in seawater with small uolume filtration assist ed by microwave digestion and flow injection inductively coupled plasm a mas spectrometer. (2007)
  • Author(s): Seiji, Nakatsuka
  • Journal Title: Analytica Chimica Acta 594 Pages: 52-60
  • Peer Reviewed
• [Journal Article] In Situ Observations of CTD and Dissolved Manganese at the Kuroshima Knoll, the Southern Ryukyu Arc (2006)
  • Author(s): Kei Okamura
  • Journal Title: Proceedings of Techno-Ocean 2006/19th JASNAOE Ocean Engineering Symposium 2006
• [Journal Article] 流れ分析を用いた現場化学計測 (2006)
  • Author(s): 岡村慶
  • Journal Title: 月刊海洋 38・12 Pages: 849-855
• [Presentation] 海底熱水探査のための現場型硫化水素センサーの開発 (2008)
  • Author(s): 杉山拓
  • Organizer: 日本分析化学会
  • Place of Presentation: 福岡大学
  • Year and Date: 2008-09-12
• [Presentation] 鹿児島湾若尊火口内を充填する未固結堆積層内に発達する熱水循環系の地球化学的研究 (2008)
  • Author(s): 山中寿朗
  • Organizer: 日本地球惑星科学連合2008年大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 2008-05-27
• [Presentation] 海底熱水探査のための現場型硫化水素センサーの開発 (2008)
  • Author(s): 杉山拓
  • Organizer: 日本分析化学会秋季年会
  • Place of Presentation: 福岡大学
• [Presentation] Discovery of hydrothermal plumes at the Rodoriguez segment, Mid-Indian Ridge. (2007)
  • Author(s): Kei Okamura
  • Organizer: American Geophysical Union 2007 fall Meeting
  • Place of Presentation: SanFrancisco, USA
  • Year and Date: 2007-12-12
• [Presentation] Discovery of hydrothermal plumes at the Rodoriguez segment (2007)
  • Author(s): Okamura, K.,
  • Organizer: Mid-Indian Ridge, American Geophysical Union 2007
  • Place of Presentation: Moscone Convention Center, San Francisco
  • Year and Date: 2007-12-08
• [Presentation] インド洋中央海嶺ロドリゲスセグメントにおける海底熱水活動の発見と熱水プルームの特徴 (2007)
  • Author(s): 岡村慶
  • Organizer: 海洋調査技術学会第19回研究成果発表会
  • Place of Presentation: 海上保安庁海洋情報部,東京
  • Year and Date: 2007-11-16
• [Presentation] Development of in-situ chemical analyzer and sensor-those applications to time-series observation and discovery of newly hydrothermal site (2007)
  • Author(s): Okamura, K.,
  • Organizer: Underwater Mining Institute University of Tokyo
  • Place of Presentation: Tokyo
  • Year and Date: 2007-10-16
• [Presentation] Development of in-situ vhemical analyzer and sensor -those applications to time-series observation and discovery of newly hydrothermal site- (2007)
  • Author(s): Kei Okamura
  • Organizer: Underwater Mining Insititute 2007
  • Place of Presentation: University of Tokyo
  • Year and Date: 2007-10-16
• [Presentation] In Situ Observations of CTD and Dissolved Manganese at the Kuroshima Knoll, the Soutehrn Ryukyu Arc (2006)
  • Author(s): Okamura K
  • Organizer: Techono-Ocean 2006/19th JASNAOE Oecan Engineering Symposium
  • Place of Presentation: Kobe International Exbition Hall
  • Year and Date: 2006-10-20
• [Presentation] 現場観測のための微少量送液ンプの開発 (2006)
  • Author(s): 岡村慶
  • Organizer: 日本分析化学会第55年会大阪大学豊中キャンパス
  • Year and Date: 2006-09-21