Fig. 4.
(A) The release number of MPs and mass loss of facemasks (Liang et al., 2022); (B) the abundance of microfibers from the common, surgical and filtering masks (Wu et al., 2022); (C) the amount and length distribution of released microfibers from masks subjected to cutting (Shen et al., 2021); (D) shapes and sizes of MPs released from the new and used DFMs (Chen et al., 2021); (E) Size distribution and MPs fiber and fragment released from surgical masks (Sun et al., 2021).