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Tracking the behavior of environmental microplastic aggregates using multiple analytical approaches

Research Project

Project/Area Number 21K21336
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 1101:Environmental analyses and evaluation, environmental conservation measure and related fields
Research InstitutionJapan Atomic Energy Agency

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)

Project Period (FY) 2021-08-30 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
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)
KeywordsMicroplastic / 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
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.

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.

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.

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (7 results)

All 2023 2022 2021

All Journal Article (1 results) (of which Int'l Joint Research: 1 results) Presentation (6 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] A new approach to extracting biofilm from environmental plastics using ultrasound-assisted syringe treatment for isotopic analyses2022

    • Author(s)
      Battulga Batdulam、Atarashi-Andoh Mariko、Nakanishi Takahiro、Koarashi Jun
    • Journal Title

      Science of The Total Environment

      Volume: 849 Pages: 157758-157758

    • DOI

      10.1016/j.scitotenv.2022.157758

    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Microbial life on plastics and its implication on elemental cycling in the aquatic environment2023

    • Author(s)
      Batdulam Battulga, Masataka Nakayama, Mariko Atarashi-Andoh, Jun Koarashi
    • Organizer
      Japan Geoscience Union Meeting (JPGU) 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Characterizing the plastic-associated biofilms by a multi-isotope approach: Insight from visible plastics in two contrasting coastal areas of Japan2023

    • Author(s)
      Batdulam Battulga, Takahiro Nakanishi, Mariko Atarashi-Andoh, Jun Koarashi
    • Organizer
      Goldschmidt 2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Preliminary study to characterize microplastics in the coastal environment using multiple analytical approaches2022

    • Author(s)
      Batdulam Battulga, Mariko Atarashi-Andoh, Jun Koarashi
    • Organizer
      Joint Conference on Environmental Chemicals
    • Related Report
      2022 Annual Research Report
  • [Presentation] Characterizations of formed biofilms and microbial communities on microplastics in coastal rivers of Japan2022

    • Author(s)
      Batdulam Battulga, Masataka Nakayama, Mariko Atarashi-Andoh, Jun Koarashi
    • Organizer
      MICRO 2022: Plastic pollution from macro to nano
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A new approach for biofilm extraction from environmental plastics using ultrasound-assisted syringe treatment for isotopic analyses2022

    • Author(s)
      Batdulam Battulga, Mariko Atarashi-Andoh, Jun Koarashi
    • Organizer
      European Geoscience Union (EGU) General Assembly 2022
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] A new extraction method to obtain organic coatings from environmental plastics2021

    • Author(s)
      Batdulam Battulga, Mariko Atarashi-Andoh, Jun Koarashi
    • Organizer
      7th International Symposium on Strategies for Sustainability in Food Production, Agriculture, and Environment 2021 (ISFAE 2021 NIIGATA)
    • Related Report
      2021 Research-status Report

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Published: 2021-10-22   Modified: 2024-01-30  

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