Production mechanisms of halogenated polycyclic aromatic hydrocarbons in coastal environments

• Project/Area Number: 16K16215
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Environmental risk control and evaluation
• Research Institution: Saitama University
• Principal Investigator: SANKODA Kenshi 埼玉大学, 理工学研究科, 助教 (80742064)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2016: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
• Keywords: 多環芳香族炭化水素 / 光化学反応 / 腐植物質 / フミン酸 / 干潟 / 多環芳香族炭化水素(PAHs) / ハロゲン化PAHs

Outline of Final Research Achievements

The main purpose in this study was to reveal products and formation mechanisms of hgalogenated polycyclic aromatic hydrocarbons (PAHs) by photochemical reactions in coastal environments. The experimental results showed that chlorinated derivatives can be formed under environmental relevant conditions of coastal area compared to brominated derivatives. The role of dissolved organic matter (DOM) in the photochemical reaction and halogenation processes were also studied. The DOM (humic acid) has both inhibition and promotion effects in the secondary formation of PAHs. In addition, the halogenation of PAHs were promoted on kaolinite particles than monmolironite particle and glass beads.

Research Products

• [Journal Article] Aqueous secondary formation of brominated, chlorinated, and mixed halogenated pyrene in the presence of halide ions (2017)
  • Author(s): K. Sankoda, T. Izumi, K. Sekiguchi, K. Nomiyama, R. Shinohara
  • Journal Title: Chemosphere Volume: 171 Pages: 399-404
  • DOI: 10.1016/j.chemosphere.2016.12.044
  • Peer Reviewed
• [Presentation] 光化学反応によるハロゲン化PAHs生成に対する土壌金属の影響 (2018)
  • Author(s): 諸井響、三小田憲史、関口和彦、王青躍
  • Organizer: 第27回環境化学討論会
• [Presentation] 水環境中における多環芳香族炭化水素の光化学反応機構と共存物質の影響 (2017)
  • Author(s): 三小田憲史, 諸井響, 関口和彦, 篠原亮太
  • Organizer: 第51回水環境学会
  • Place of Presentation: 熊本大学（熊本県, 熊本市）
  • Year and Date: 2017-03-15
• [Presentation] 干潟環境下におけるPAHsの光化学分解とハロゲン化誘導体生成に対する溶存有機物の影響 (2017)
  • Author(s): 諸井響、三小田憲史、関口和彦
  • Organizer: 第26回環境化学討論会
• [Presentation] 水環境中における多環芳香族炭化水素の光化学反応機構と共存物質の影響 (2017)
  • Author(s): 三小田憲史、諸井響、関口和彦、篠原亮太
  • Organizer: 第51回水環境学会年会
• [Remarks]
  • URL: https://www-kofu.jsps.go.jp/kofu1/shinsei/ssoLogonCheck.do