2022 Fiscal Year Final Research Report
Pollution of hazardous materials via microplastics and their accumulation processes
| Project/Area Number |
20K12206
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 64010:Environmental load and risk assessment-related
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| Research Institution | Toyama Prefectural University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | マイクロプラスチック / 水環境 / 河川 / 海洋環境 / 汚染物質 |
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| Outline of Final Research Achievements |
In this study, pollution of anthropogenic environmental chemicals via microplastics were investigated. Microplastics were collected from Japanese coasts and rivers. Polycyclic aromatic hydrocarbons (PAHs) in the collected samples were analyzed. Concentrations and compositions of PAHs in microplastcs samples differed among shapes and elapsed times in environments.
In the laboratory experiments, accelerated aging treatments were conducted on model particles. It was found that irradiation of simulated sunlight irradiation can increase sorption amounts of pyrene.
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| Free Research Field |
環境工学、環境化学
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| Academic Significance and Societal Importance of the Research Achievements |
本研究ではプラスッチックごみへの汚染物質の蓄積の実態だけでなく、化学的劣化変質の過程と汚染物質蓄積との関係性に着目した研究を行った。化学物質の蓄積については、これまでも研究例があるが、劣化を考慮していない粒子を使用した研究例が多かった。また、本研究ではプラスチックの劣化過程に関する基礎情報も得られた。これらの結果を踏まえてさらに研究を進めることにより、マイクロプラスチックの発生源の解析や発生防止などに向けた成果につながると期待される。
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