Quantifying the amount of microplastics and microrubber in rainwater (jpg)

Microscope montage, measuring 5.2 mm by 5.3 mm, of a rainwater sample, after post-processing to identify all particles larger than 10 µm. The vast majority of the particles are not plastic (black). The inserts show microplastic particles identified by spectral matching to different reference plastic types. Orange: PTFE (Teflon™), Green: Polyethylene terephthalate (polyester), Red: Polyethylene, Cyan: Polypropylene.