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New IAEA Project Targets Microplastics in Seafood

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Microplastics often come from synthetic fibres and industrial processes, can be as small as one micron (one-thousandth of a millimetre).  (F. Biquet/IAEA)

A new four-year IAEA coordinated research project (CRP) will address microplastic pollution in seafood, and the findings will help improve global microplastic monitoring and enhance understanding of how microplastic pollution affect seafood and human health.

Around 3.1 billion people worldwide rely on seafood as a source of protein. But increasing plastic waste — and the resulting microplastic pollution — poses a growing threat to the global seafood supply.

Microplastics often come from synthetic fibres and industrial processes, and can be as small as one micron (one-thousandth of a millimetre). These particles have become a major environmental concern, threatening both marine ecosystems and human health. When marine organisms ingest microplastics, these tiny particles can enter the human body through seafood consumption. Microplastics can cause physical damage and act as carriers for harmful chemicals, viruses and bacteria, making their impact even more dangerous. This contamination not only threatens seafood production and fisheries, but also risks consumer health, potentially limiting access to safe and nutritious food. A recent study  found that 99% of seafood samples tested contained microplastics, highlighting the urgent need for effective monitoring as well as solutions to protect both marine organisms and human health.

Nuclear Techniques to Enhance Marine Monitoring

Addressing marine microplastic pollution, especially its implications for seafood safety, requires a multifaceted and multidisciplinary approach and robust analytical tools. The IAEA’s NUTEC Plastics initiative uses nuclear techniques to enhance the detection and analysis of microplastics and promote harmonized monitoring protocols  worldwide. These efforts support better data collection for scientists, regulators and policymakers alike.

While standardized methods for analysing microplastics in seawater, beach sand and sediment are becoming well-established, harmonized methods for monitoring and analysing microplastics in seafood or complex marine biological matrices still require development. One major challenge is extracting small microplastics from tissue of marine organisms without damaging the particles, as the chemicals used in the process can degrade them and compromise the analysis and data.

CRP Overall Objectives

The overall objective of this research project is to identify microplastic contamination in seafood through the development and application of nuclear techniques.

 The CRP will:

  • Develop and validate harmonized analytical protocols to detect and quantify small microplastics (20–300 microns) in seafood, starting with mussels, a commonly studied species.

  • Expand the methodology to other types of seafood, such as marine shrimp and fish flesh, based on the outcome of the initial phase.

Both goals will help generate the actionable, scientific knowledge needed to develop the evidence-based regulatory measures to protect marine ecosystems and human health.

The CRP will focus on the following specific research objectives:

  • Optimize and harmonize new analytical techniques for the separation, identification and chemical characterization of microplastics in marine biological samples (e.g. mussels, marine shrimp, fish).

  • Explore and propose new methods to extract microplastics from seafood, including the development of combined protocols for small microplastic particles.

  • Gain a clearer understanding of the distribution, types and morphology of microplastics found in seafood.

  • Develop, evaluate and standardize integrative (radio)isotopic and conventional techniques to track levels, sources and persistence of microplastics and nanoplastics in marine organisms.

  • Prepare results and share findings effectively to stakeholders, including materials for policymakers, and the broader scientific community.

How to join this CRP

Research institutions interested in joining the CRP must submit a Proposal for Research Contract or Agreement via email by 15 September 2025 to the IAEA’s Research Contracts Administration Section. Proposals should follow the appropriate template available on the IAEA’s CRA web portal. The same template applies to both the research and technical contract.

The IAEA strongly encourages the inclusion of women and early-career researchers in submitted proposals.

For further details, interested applicants should use the contact form on the CRP page.

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