Establishment of a method for identification of burn-out materials by pyrolysis GC in fire investigation

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K15272
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 25030:Disaster prevention engineering-related
• Research Institution: National Research Institute of Fire and Disaster
• Principal Investigator: Yasuhiro Sato 総務省消防庁消防大学校(消防研究センター), その他部局等, その他 (60760296)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 熱分解GC / 焼損物 / 火災原因調査 / 物質同定

Outline of Final Research Achievements

In fire investigations, it is sometimes required to identify the materials of burn-out materials collected at the fire scene. In this study, with the aim of establishing a method for identification of burn-out materials by pyrolysis GC, I examined the changes in the analytical results of pyrolysis GC of samples before and after heating. In particular, cellulose and polyamides, which show significant changes before and after heating, were examined in detail, and pyrolysis GC and FT-IR were compared. I found that it is necessary to consider the possibility of misinterpretation of samples consisting of multiple components.

Free Research Field

火災

Academic Significance and Societal Importance of the Research Achievements

本研究により、セルロース、ポリアミド類等の様々な高分子化合物について加熱による化学的な変化を熱分解GCおよびFT-IRで分析をすることで把握することができた。このような化学的な分析を行ったことは、高分子化合物の燃焼機構の分子レベルでの理解を進めたことに繋がり学術的意義のある研究成果が得られたと考えられる。また、本研究の成果は火災現場の焼損残渣物の材質同定に役立つ。これにより、火災原因調査技術の高度化が期待されることから社会的意義も高い。