Canadian health authorities have issued a precautionary recall for masks containing graphene—a nanomaterial made up of a single layer of carbon atoms—citing the need to study health risks after a study in animals found the substance had “some potential” to cause lung toxicity.
The recall, issued Friday by Health Canada, urges Canadians not to use masks that contain graphene or biomass graphene because of the potential for the tiny particles to be inhaled, which may pose a health risk.
