Functional analysis of the humus-like substances on polycyclic aromatic hydrocarbons in atmosphere aerosol under long-range transport

2019 Fiscal Year Final Research Report

• Project/Area Number: 17K00519
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Kyoto Institute of Technology
• Principal Investigator: FUSE YASURO 京都工芸繊維大学, 分子化学系, 准教授 (90303932)
• Co-Investigator(Kenkyū-buntansha): 柄谷 肇 京都工芸繊維大学, 分子化学系, 教授 (10169659) ; 山田 悦 京都工芸繊維大学, 分子化学系, 教授 (30159214)
• Project Period (FY): 2017-04-01 – 2020-03-31
• Keywords: HULIS / 熱分解GC/MS / 熱脱着GC/MS / PM2.5 / 多環芳香族炭化水素 / 大気環境 / 長距離輸送

Outline of Final Research Achievements

Humic-like substances (HULIS) contained in atmospheric particulate matter have various effects such as protection or promotion of decomposition of other coexisting harmful substances. In this study, we constructed a system to analyze the chemical properties of HULIS and toxic substances in the atmosphere, which had been repaired on the filter paper without pretreatment, and investigated the dynamics.　As a result, the following training results were obtained. 1. development of a method to accurately analyze polycyclic aromatic hydrocarbons (PAHs) contained in atmospheric PM2.5 by thermal desorption. 2. development of batch evaluation method for organic components including HULIS using multi-shot pyrolyzer.　These results are essential tools for clarifying the role of HULIS in the atmosphere.

Free Research Field

環境動態解析、環境影響評価、分析化学

Academic Significance and Societal Importance of the Research Achievements

これまでの大気中浮遊粒子状物質の化学特性評価は複雑な前処理が必要であった。しかし、化学的、物理的な前処理は含有する化学成分の化学特性を変化させていることが指摘されてきた。本研究での前処理をしない分析方法は迅速性だけではなく、より正確な化学特性情報を与えるものである。また、PAHsの高沸点成分の熱抽出における低い回収率を大きく改善する熱抽出助剤（ノニオン界面活性剤）の添加技術の応用範囲は広く学術的な意義は大きい。