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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 Marine & Wildlife Sign in to save

Microplastics in the mud: Finnish lake sediments help us get to the bottom of plastic pollution

2023
Saija Saarni

Summary

Analysis of Finnish lake sediments reveals that microplastic pollution has been accumulating at the bottom of these remote freshwater bodies since mass plastic production began in the 1950s, providing a sediment archive of growing contamination over decades. This demonstrates that microplastic pollution has reached pristine inland water systems far from industrial sources, with sediment records offering a timeline for understanding long-term ecosystem exposure.

Since the 1950s, billions of tons of plastic have been produced and much of it ends up in the environment – even at the bottom of lakes in Finland.

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