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Quantitative analysis of free radicals by collaboration of effective magnetic moment method and magnetic resonance method

Research Project

Project/Area Number 17K05918
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Analytical chemistry
Research InstitutionNational Institute of Advanced Industrial Science and Technology

Principal Investigator

MATSUMOTO NOBUHIRO  国立研究開発法人産業技術総合研究所, 計量標準総合センター, 主任研究員 (30358048)

Co-Investigator(Kenkyū-buntansha) 伊藤 信靖  国立研究開発法人産業技術総合研究所, 計量標準総合センター, 研究グループ長 (70415644)
Project Period (FY) 2017-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords一次標準直接法 / 絶対定量分析 / 標準試料 / 純度 / 磁気分析 / 有機分析 / 超伝導量子干渉計(SQUID) / 電子スピン共鳴(ESR) / フリーラジカル試薬 / 電子スピン共鳴測定(ESR) / キュリー・ワイスの法則 / 常磁性 / 定量EPR法 / 一次標準測定法 / 物質量 / SQUID / 電子スピン共鳴 / 絶対定量法 / 一次標準比率法 / 標準物質 / 純度分析 / ESR / 磁性
Outline of Final Research Achievements

Pure reagents of TEMPOL, DPPH and 4HTB are used as standard sample of free radical number. We measured number of free radicals in each pure reagent by "effective magnetic moment method". Purity as mass fraction based on the measured number of free radicals by the method is essentially different from purities based on conventional separation analysis or titration. The purity by the effective magnetic moment method will be very useful for practitioners of various quantitative free radical analyses using analytical instruments.
In addition, we have successfully demonstrated that quantitative electron paramagnetic resonance[qEPR] method using primary standard sample with known purity by the effective magnetic moment method can simply and accurately measure purity of secondary standard sample, with uncertainty of 0.7 %-1.4 %.

Academic Significance and Societal Importance of the Research Achievements

様々な分析機器の多くは,それ自体では物質の純度または濃度をはかる事が出来ない。物質量(mol)が既知の物質を用いて、その分析機器の目盛り付けをする必要がある。その物質量を矛盾なく求める事ができるのは、分析化学の教科書に記載されている重量法と電量分析法、そして、凝固点降下法の3種類のみである。本研究による「有効磁気モーメント法」は、その資格がある日本発の第4の分析法であり、物質中に存在する遊離基(フリーラジカル)の数を直接測定できる唯一の分析法である。また、「qEPR法」との組み合わせにより、短時間でかつ実用的な精確さでフリーラジカル試薬の純度を分析可能である事が実証された。

Report

(6 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (29 results)

All 2021 2020 2019 2018 2017 Other

All Int'l Joint Research (4 results) Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (15 results) (of which Int'l Joint Research: 4 results) Remarks (6 results)

  • [Int'l Joint Research] 米国標準技術研究所(NIST)(米国)

    • Related Report
      2020 Research-status Report
  • [Int'l Joint Research] 米国標準技術研究所(NIST)(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] 米国標準技術研究所(NIST)(米国)

    • Related Report
      2018 Research-status Report
  • [Int'l Joint Research] 米国標準技術研究所(NIST)(米国)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Sample Length Dependence of Magnetic Moment Detected By a SQUID Magnetometer Using Nickel Cylinders2021

    • Author(s)
      Nobuhiro Matsumoto, Cindi L. Dennis, Robert D. Shull
    • Journal Title

      IEEE TRANSACTIONS ON MAGNETICS

      Volume: 57 Issue: 2 Pages: 1-5

    • DOI

      10.1109/tmag.2020.3006209

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Improvement of Reproducibility of Magnetic Moment Detected by a SQUID Magnetometer Through Radial Offset Measurement on a YIG Sphere2019

    • Author(s)
      Nobuhiro Matsumoto, Cindi L. Dennis, Robert D. Shull
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 55 Issue: 2 Pages: 1-5

    • DOI

      10.1109/tmag.2018.2867477

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Measuring Number of Free Radicals and Evaluating the Purity of Di(phenyl)-(2,4,6-trinitrophenyl)iminoazanium [DPPH] Reagents by Effective Magnetic Moment Method2018

    • Author(s)
      Nobuhiro Matsumoto, Nobuyasu Itoh
    • Journal Title

      Analytical Sciences

      Volume: 34 Issue: 8 Pages: 965-971

    • DOI

      10.2116/analsci.18P120

    • NAID

      130007432133

    • ISSN
      0910-6340, 1348-2246
    • Year and Date
      2018-08-10
    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Low-temperature Electronic Paramagnetic Resonance Measurements of TEMPO and 4-Hydroxy-TEMPO Benzoate for Purity Analyses by the Effective Magnetic-moment Method2017

    • Author(s)
      Nobuhiro Matsumoto, Takuya Shimosaka
    • Journal Title

      Analytical Sciences

      Volume: 33 Issue: 9 Pages: 1059-1065

    • DOI

      10.2116/analsci.33.1059

    • NAID

      130006071186

    • ISSN
      0910-6340, 1348-2246
    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Purity analyses of 4HTB, TEMPOL and DPPH by "effective magnetic moment method" based on the Curie-Weiss law and the EPR fundamental equation2021

    • Author(s)
      Nobuhiro Matsumoto
    • Organizer
      22nd International Society of Magnetic Resonance Conference (ISMAR)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 有効磁気モーメント法」によるフリーラジカル試薬の純度分析2021

    • Author(s)
      松本信洋、伊藤信靖
    • Organizer
      2020年度計量標準総合センター成果発表会 ポスターセッション(オンライン)
    • Related Report
      2020 Research-status Report
  • [Presentation] SQUIDによる磁気モーメント測定値の試料長さ依存性2020

    • Author(s)
      松本 信洋、Cindi L. Dennis、Robert D. Shull
    • Organizer
      第80回分析化学討論会(現地開催中止、要旨集の発行をもって発表成立)
    • Related Report
      2020 Research-status Report
  • [Presentation] SQUIDによる磁気モーメント測定値のradial offset依存性測定と再現性向上2020

    • Author(s)
      松本 信洋、Cindi L. Dennis、Robert D. Shull
    • Organizer
      電子スピンサイエンス学会2020(オンライン)
    • Related Report
      2020 Research-status Report
  • [Presentation] SQUIDによる磁気モーメント測定値のradial offset依存性と再現性向上2019

    • Author(s)
      松本 信洋、C. L. Dennis、R. D. Shull
    • Organizer
      第79回分析化学討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] 有効磁気モーメント法によるDPPHのフリーラジカル純度分析II2019

    • Author(s)
      松本 信洋、伊藤 信靖
    • Organizer
      ESRフォーラム研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 有効磁気モーメント法」によるガドリニウムイオン・フリーラジカルの絶対定量2019

    • Author(s)
      松本 信洋
    • Organizer
      第16回茨城地区分析技術交流会
    • Related Report
      2019 Research-status Report
  • [Presentation] SQUIDによる磁気モーメント測定値のradial offset依存性と再現性向上2019

    • Author(s)
      Nobuhiro Matsumoto, C.L. Dennis, R.D. Shull
    • Organizer
      日本分析化学会第79回分析化学討論会
    • Related Report
      2018 Research-status Report
  • [Presentation] 有効磁気モーメント法による窒素ラジカルDPPH粉末のフリーラジカル純度分析2018

    • Author(s)
      松本 信洋、伊藤 信靖
    • Organizer
      日本分析化学会第78回分析化学討論会
    • Related Report
      2018 Research-status Report
  • [Presentation] Different magnetic behaviors and free radical contents of DPPH reagents2018

    • Author(s)
      Nobuhiro Matsumoto, Nobuyasu Itoh
    • Organizer
      ICM2018 (21st International Conference on Magnetism)
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 有効磁気モーメント法による窒素ラジカルDPPH粉末のフリーラジカル純度分析2018

    • Author(s)
      松本信洋、伊藤信靖
    • Organizer
      日本分析化学会第78回分析化学討論会
    • Related Report
      2017 Research-status Report
  • [Presentation] Improvement of reproducibility of magnetic moment detected by a SQUID magnetometer and radial offset measurement using a YIG sphere2018

    • Author(s)
      Nobuhiro Matsumoto, Cindi Dennis, Robert Shull
    • Organizer
      ICM2018(21st International Conference on Magnetism)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Low temperature electron paramagnetic resonance of TEMPO and 4-hydrozy-TEMPO Benzoate for purity analysis by efective magnetic moment method2017

    • Author(s)
      Nobuhiro Matsumoto Takuya Shimosaka
    • Organizer
      Asia/ CJK symposium on analytical science 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 有効磁気モーメント法によるDPPHのフリーラジカル純度分析2017

    • Author(s)
      松本信洋
    • Organizer
      第21回ESRフォーラム研究会2017
    • Related Report
      2017 Research-status Report
  • [Presentation] 有効磁気モーメント法によるDPPH粉末のフリーラジカル純度分析2017

    • Author(s)
      松本信洋、伊藤信靖
    • Organizer
      電子スピンサイエンス学会第56回年会(SEST2017)
    • Related Report
      2017 Research-status Report
  • [Remarks] 産総研公式個人ホームページ(松本信洋)

    • URL

      https://staff.aist.go.jp/nobu-matsumoto/

    • Related Report
      2021 Annual Research Report
  • [Remarks] 松本信洋(産総研公式個人Webにおける「有効磁気モーメント法」の研究紹介)

    • URL

      https://staff.aist.go.jp/nobu-matsumoto/research/research_b.html

    • Related Report
      2020 Research-status Report
  • [Remarks] 産総研個人Webページ(松本信洋)・「有効磁気モーメント法」の研究紹介

    • URL

      https://staff.aist.go.jp/nobu-matsumoto/research/research_b.html

    • Related Report
      2019 Research-status Report
  • [Remarks] 松本信洋(researchmap)

    • URL

      https://researchmap.jp/read0120578

    • Related Report
      2018 Research-status Report
  • [Remarks] 松本信洋(産総研個人用公式Web)

    • URL

      https://staff.aist.go.jp/nobu-matsumoto/

    • Related Report
      2018 Research-status Report 2017 Research-status Report
  • [Remarks] 松本信洋(Researchmap)

    • URL

      https://researchmap.jp/read0120578/

    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2023-01-30  

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