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Development of a New Method for Monitoring Time-Integrated Water Fugacity by the Use of Elastic Recoil Detection Analysis

Research Project

Project/Area Number 63470033
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 分析・地球化学
Research InstitutionKitasato University

Principal Investigator

NOZAKI Tadashi  Kitasato University, School of Hygienic Sciences Professor, 衛生学部, 教授 (00087488)

Co-Investigator(Kenkyū-buntansha) ARATANI Michi  Inst. Phys. Chem. Res., Radiochemistry lab. Researcher, 核化学研究室, 研究員 (40087490)
AONO Keiko  Kitasato, University, Common Faculty of Culture Lecturer, 教養部, 講師 (10050444)
NIISAWA Kazuhiro  Kitasato University, School of Hygienic Sciences Assistant, 衛生学部, 助手 (90050616)
IWAHASHI Makio  Kitasato University, School of Hygienic Sciences Lecturer, 衛生学部, 講師 (70087120)
Project Period (FY) 1988 – 1990
Project Status Completed (Fiscal Year 1990)
Budget Amount *help
¥6,400,000 (Direct Cost: ¥6,400,000)
Fiscal Year 1990: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1989: ¥2,600,000 (Direct Cost: ¥2,600,000)
Fiscal Year 1988: ¥2,800,000 (Direct Cost: ¥2,800,000)
KeywordsElastic Recoil Detection Analysis (ERDA) / Rutherford Back-scattering Analysis (RBS) / Glass Surface / H-D exchange / Time-integrated Water-fugacity / Cations in Soil Solutions / 表面改質 / HーD置換 / H-D置換 / 深さ分布
Research Abstract

Cations in surfaces of various glasses were leached in H O or D O, and H-D exchange and H (D) -by-cation replacement in the hydrated layer were investigated mainly by elastic recoil detection analysis and Rutherford back-scattering, in search of possibilities for the use of the glasses in the monitoring of moisture and dissolved cations in the soil. Similarly with the hydration rate, the rates of the exchange and replacement were found to depend markedly on the composition of glass, especially on alumina content. For some soda-lime glasses of low alumina contents, the two reactions were shown to proceed by at least two stages and mechanisms of different temperature dependences. These results suggest the following potentialities in the utilization of glass for the monitoring : (1) the hydration rate of a sodium silicate glass for water fugacity in the soil, (2) the H-D exchange rate in low alumina-content glasses for water vapor in special, dry and hot area, though the exchange capacity is deficient for usual environments, and (3) rate and resultant depth profile of the H-by-cation replacement for cations in the soil. Our first plan for practical use of the glass monitors has delayed, but we are ready for field experiments by (1) and intend to begin soon other monitorings in collaboration with the institute of Academia Sinica in Ulumuqi, China. We can now obtain various glasses of desired compositions, and can use particle accelerators for the ERDA and RBS measurements. We have, however, still a lot of studies to carry out, preparing a variety of samples under well-defined conditions to obtain more reproducible data, before fully effectuating the practical monitoring.

Report

(4 results)
  • 1990 Annual Research Report   Final Research Report Summary
  • 1989 Annual Research Report
  • 1988 Annual Research Report
  • Research Products

    (18 results)

All Other

All Publications (18 results)

  • [Publications] 野崎 正,新沢 和裕,岩橋 槙夫,青野 桂子,荒谷 美智: "土壌中水蒸気分圧と溶存陽イオンモニタ-用としてのガラス表面の既貭と測定" 複合照射装置実験報告書(東京工大). 5. 50-63 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Nozaki,K.Niisawa,M.Iwahashi,K.Aono,M.Aratani: "Mothificotion of glass Surface for Use as a Monitor of Moisture and Dissovrd Cations in the Soil." J.NonーCryst.Solids.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] 野崎 正,新沢 和裕,荒谷 美智: "表面層陽イオンをD,H置換したガラスを用いる、微量水蒸気や土壌水中陽イオンモニタ-法開発の基礎研究" 分析化学.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Nozaki,K.Niisawa,K.Aono,M.Aratani: "Cation Uptake by Hedroyenated glass Surfaee Layers." J.NonーCryst.Solids.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nozaki, K. Niisawa, M. Iwahashi, K. Aono, and M. Aratani: ""Measurement of Cations in Glass surfaces by Rutherford Scattering Analysis"" Heavy Ion Accel. Prog. Rep., (Tokyo Inst. Tech.). 4. 57-59 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nozaki, K. Niisawa, M. Iwahashi, K. Aono, and M. Aratani: ""Reformation and Measurement of Glass Surfaces for Use as Monitors of Water Fugacity and Dissolved Cations in the soil" Heavy Ion Accel. Prog. Rep., (Tokyo Inst. Tech.). 5. 50-63 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nozaki, K. Niisawa, M. Iwahashi, K. Aono, and M. Aratani: ""Modification of Glass Surface for Use as a Monitor of Moisture and Dissolved Cations in the Soil"" J. Non-Cryst. Solids,.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nozaki, K. Niisawa, K. Aono, and M. Aratani: ""Analytical Studies of H- and D-replaced Glass Surface Layers for Use as a Monitor of Moisture and Dissolved Cations in the Soil"" Japan Analyst.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T. Nozaki, K. Niisawa, K. Aono, and M. Aratani: ""Cation Uptake by Hydrogenated Glass Surface Layers"" J. Non-Cryst. Solids.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1990 Final Research Report Summary
  • [Publications] T.Nozaki,K.Niisawa,M.Iwahashi,M.Aratani: "Modification of Glass Surface for Use as a monitor of moisture and Dissolved Cations in the Soil." J.noncrystal Solids.

    • Related Report
      1990 Annual Research Report
  • [Publications] 野崎 正,新沢 和裕,岩橋 槙夫,青野 桂子,荒谷 美智: "土壌中水蒸気分圧と溶存陽イオンモニタ-用としてのガラス表面の改質と測定" 複合照射実験装置研究報告書(東工大). 5. (1991)

    • Related Report
      1990 Annual Research Report
  • [Publications] 野崎 正,新沢 和裕,青野 桂子,荒谷 美智: "表面層陽イオンをD,H置換したガラスを用いる、微量水蒸気や土壌水中陽イオンモニタ-法開発の基礎研究" 分析化学.

    • Related Report
      1990 Annual Research Report
  • [Publications] T.Nozaki et al.: "Cation Uptake by Hydrogenated glass Surface Layers." J.Noncryst.Solids.

    • Related Report
      1990 Annual Research Report
  • [Publications] 野崎正: "ラザフォ-ド散乱分析によるガラス中の陽イオンの測定" 東京工業大学原子科学研究室(1989)複合照射実験装置研究報告書. (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] T.NOZAKI: "H-D Exchange in a Glass Surface Layer Measured by Rutherford Scattering" J.Non-Cryst.Solids.

    • Related Report
      1989 Annual Research Report
  • [Publications] M.Aratani,: Nucl.Inster.Methods. 1989. (4)

    • Related Report
      1988 Annual Research Report
  • [Publications] T.Nozaki,: RIKEN Accel Prog.Rep.23. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] M.Iwahashi,: J.Colloid Interface Sci.

    • Related Report
      1988 Annual Research Report

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Published: 1988-04-01   Modified: 2016-04-21  

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