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The measurement of 131I-labeled microplastic accumulation in dog conch (Laevistrombus canarium) using radiotracing method

Journal of Radioanalytical and Nuclear Chemistry 2025
Rieke P. Legendevi, Muslim Muslim, Heny Suseno, Moch Subechi, Chairuman Chairuman, Marlina Marlina, Marlina Marlina, Miftakul Munir

Summary

Researchers used iodine-131-labeled polystyrene microplastics as a radiotracer to measure bioaccumulation in dog conch (Laevistrombus canarium), finding that optimal accumulation occurred at a salinity of 32 g/L and the lowest microplastic concentration tested, demonstrating that environmental salinity significantly influences microplastic uptake in marine mollusks.

Polymers

This study aims to evaluate the bioaccumulation of microplastics in dog conch (Laevistrombus canarium) using polystyrene microplastics labeled with Iodine-131 as a radiotracer with variations in water salinity (30, 32, and 34 g L−1) and microplastic concentrations (0.9625, 1.925, and 3.85 m g L−1). The results showed that optimal bioaccumulation occurred at a salinity of 32 g L−1 and the lowest microplastic concentration, indicating physiological limitations in the accumulation process. The radiotracer method proved effective in sensitively and real-time detecting microplastic accumulation. These findings highlight the importance of environmental parameters on microplastic bioaccumulation and their implications for the health of marine organisms.

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