though the masks contain chemicals that no doubt contribute to inflammation in the lungs, aggregate bacteria and viruses, and potentially deposit materials, these are not primarily micro plastics, and could not explain the abundance of micro plastics at stratospheric level.
you should read the Plastics Today article.
though the masks contain chemicals that no doubt contribute to inflammation in the lungs, aggregate bacteria and viruses, and potentially deposit materials, these are not primarily micro plastics, and could not explain the abundance of micro plastics at stratospheric level.