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Chemical composition and source apportionment of water-soluble organic matter in PM2.5

Research Project

Project/Area Number 17K12829
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental impact assessment
Research InstitutionJapan Automobile Research Institute

Principal Investigator

Suto Nana  一般財団法人日本自動車研究所, エネルギ・環境研究部, 研究員 (70791424)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords粒子状物質 / 水溶性有機炭素 / 安定同位体比 / 発生源推定 / 有機エアロゾル / 微小粒子状物質 / 安定同位体 / 水溶性有機物
Outline of Final Research Achievements

Water-soluble organic carbon (WSOC) is formed by oxidation of organic compounds in particulate matter. Stable carbon isotope ratio (δ13C) analysis is widely used to identify the sources of particulate matter, but determining the δ13C values of WSOC is complicated and requires a time‐consuming pretreatment process. This study tried to develop an online method for determining the δ13C values of WSOC in PM2.5 by means of wet oxidation/isotope ratio mass spectrometry. This simple method is quick because the paritulate matter is collected with a quartz fiber filter, extracted with water, and then analyzed without pretreatment. The quantitative method showed low blank levels for the analysis of the WSOC in atmospheric samples. Using this method, we determined δ13C values of WSOC in PM2.5 samples collected in Japan during the period from July to November 2017 and found that the values ranged from -26.5‰ to -25.0‰.

Academic Significance and Societal Importance of the Research Achievements

PM2.5は国内の発生源のほかにも,国外からの越境汚染が問題視されている。本研究で構築した水溶性有機炭素の安定同位体比測定技術は,複数の発生源を切り分けることのできる手法である。そのため学術的に大きな役割と意義がある。また,本研究で構築した測定技術は,河川や海水,土壌などの環境分野への応用が可能である。さらに将来的には,これらの技術を用いて,食品の偽装問題,スポーツドーピング,医薬品分野など他の分野への応用や分析技術の革新につながる可能性があると考えている。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (5 results)

All 2019 2018

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Stable carbon isotope ratios for organic acids in commercial honey samples2019

    • Author(s)
      Kawashima Hiroto, Suto Momoka, Suto Nana
    • Journal Title

      Food Chemistry

      Volume: 289 Pages: 49-55

    • DOI

      10.1016/j.foodchem.2019.03.053

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Online wet oxidation/isotope ratio mass spectrometry method for determination of stable carbon isotope ratios of water-soluble organic carbon in particulate matter2018

    • Author(s)
      Suto Nana, Kawashima Hiroto
    • Journal Title

      Rapid Communications in Mass Spectrometry

      Volume: 32 Issue: 19 Pages: 1668-1674

    • DOI

      10.1002/rcm.8240

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Determination of carbon isotope ratios for honey samples by means of a liquid chromatography/isotope ratio mass spectrometry system coupled with a post-column pump2018

    • Author(s)
      Kawashima Hiroto, Suto Momoka, Suto Nana
    • Journal Title

      Rapid Communications in Mass Spectrometry

      Volume: 32 Issue: 15 Pages: 1271-1279

    • DOI

      10.1002/rcm.8170

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Online wet oxidation/isotope ratio mass spectrometry method for determination of stable carbon isotope ratios of water-soluble organic carbon in PM2.52018

    • Author(s)
      Suto Nana, Kawashima Hiroto
    • Organizer
      AGU fall meeting 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 越境汚染地域における有機トレーサー成分の季節変動と特性2018

    • Author(s)
      須藤菜那,萩野浩之,西隆行,岩本真二
    • Organizer
      第59回大気環境学会年会
    • Related Report
      2018 Annual Research Report

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Published: 2017-04-28   Modified: 2020-03-30  

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