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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Environmental Sources Food & Water Human Health Effects Marine & Wildlife Sign in to save

Effects of Secondary Recycled Microplastics on the Biotest Organism Paramecium caudatum

Russian Journal of General Chemistry 2025
O. V. Karpukhina, I. G. Kalinina

Summary

Researchers exposed the freshwater ciliate Paramecium caudatum to secondary recycled PVC and HDPE microparticles and found that concentrations of 5 μg/mL and above significantly impaired survival and behavior, raising concerns about microplastic toxicity propagating through planktonic food webs.

Polymers
HDPE PE PVC
Study Type Environmental

Microplastic pollution of aquatic environments has become a global environmental problem. The study has found that the freshwater ciliate Paramecium caudatum ingests secondary recycled microplastic particles. Polyvinyl chloride and high-density polyethylene microparticles at concentrations of 5 μg/mL and higher exert a significant negative impact on the survival and behavior of ciliates. Since this organism is an integral part of the planktonic food web, there are certain environmental risks of the advancement of toxic substances along the food chain, which poses a potential hazard to aquatic biota and humans.

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