Fig. 1: Temporal variation and size-fractional distribution of airborne micro- and nano-plastics (MNPs).
From: Composition, interactions and resulting inhalation risk of micro- and nano-plastics in urban air
a Daily mass concentrations of Polystyrene (C-PS; dark yellow), polycarbonate (C-PC; green color), polypropylene (C-PP; pink color), polymethyl methacrylate (C-PMMA; yellow color), polyethylene terephthalate (C-PET; blue color), polyethylene (C-PE; orange color), polyvinyl chloride (C-PVC*; olive color), Truck tire tread (TTT; dark gray color), Car tire tread (CTT; light gray color) in total PM10MNPs (solid color bar), fine microplastics (FMPs; diagonal shaded bar), and coarse microplastics (CMPs; cross shaded bar) over the two-week sampling period. Error bars represent standard deviation, indicating variability in measured concentrations. b Box plot for each quantified polymer contains minimum, maximum, and mean values with individual data points in circles representing relative contributions of FMPs and CMPs to PM10MNPs, expressed as FMPs/PM10MNPs (Pink color) and CMPs/PM10MNPs (Dark Gray color) ratios, respectively. Data show an approximately equal partitioning of MNPs mass between FMPs and CMPs with noticeable temporal variability.
