| Project/Area Number |
21K21336
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
1101:Environmental analyses and evaluation, environmental conservation measure and related fields
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
Battulga Batdulam 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 原子力基礎工学研究センター, 博士研究員 (50907996)
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| Project Period (FY) |
2021-08-30 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Microplastic / biofilm / coastal sediment / stable isotopic ratio / radiocesium / thermal analysis / coastal environments / plastic debris / stable isotopes / seasonal variations / coastal environment / Biofilm / Radiocesium / Stable isotopes / Coastal environment / Coastal rivers |
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| Outline of Research at the Start |
The purpose of the current research is to investigate the properties, behavior, and fate of microplastics in the coastal rivers of Japan.
Because environmental plastics have various properties as a result of processes such as degradation, fragmentation, formation of biofilm and interaction with other pollutants according to their residential time in the environment.
Furthermore, developed biofilms on the plastics may act as a binding agent to form MP aggregates, resulting in increase in MP buoyancy and affecting the fate and behavior of microplastics in the environment.
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| Outline of Final Research Achievements |
The global survey for the presence of microplastics (MPs) in aquatic environments has attracted widespread scientific attention over the past decade. However, evaluating the composition and characteristics of these anthropogenic debris using highly sensitive techniques is still under consideration. This study demonstrates a multidimensional analytical approach, including isotopic, radiotracers, and thermogravimetric analyses to evaluate characteristics and behavior of MPs in the environment. The present study provides fundamental data of environmental MPs from the isotopic and thermogravimetric aspects and highlights the usefulness of the approach for advances in MP research.
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| Academic Significance and Societal Importance of the Research Achievements |
Considering that plastic debris can distribute various pathways around the world, the research outcome and the multidimensional analytical approaches demonstrated in the present study could lay the foundation for further research to elucidate their characteristics and behavior in the world.
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