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Plastic nanoparticles raise concern because of their potential impact on the environment. However, many questions need to be answered to establish how dangerous they really are.
Fragments of plastic smaller than 1 μm have raised concerns about the potential risks they pose to the environment. Research will have to answer a number of questions to establish what the realistic risks are.
To assess potential risks posed by plastic nanoparticles, we must study the way in which they transfer and transform in the environment. Using 13C-labelled nanoplastics could provide a safe and effective way to establish whether the plastic is mineralized or whether it persists in the environment.