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The Role of Humic Acids on the Effects of Nanoplastics in Fish
Summary
Humic acids — naturally occurring organic compounds in freshwater — alter the surface properties of nanoplastics and modulate their toxicity to fish, in some cases reducing harm and in others increasing it. This finding shows that environmental context matters when assessing nanoplastic risk, as water chemistry can substantially shift biological outcomes.
Plastics materials rarely biodegrade, instead, through different biotic and abiotic processes, they fragment into smaller microplastics (<5 mm, MPs), which have already been reported as ubiquitous pollutants in marine environments worldwide, as well as in a...