Light (A and D), fluorescent (B and E), and combined (C, F, G, and H) microscopy images of sediments 1 obtained after centrifugation at 100 g. Green fluorescence arises from plastic particles, while dark objects are terrigenous particles from stones. PMMA: A - F and H, PS: G. Scale: 50 μm - G, 10 μm - D-F and H, 5 μm - A-C.