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SEM images of pure CaCO3 crystals (a), microplastic particles extracted from the facial scrub (b), CaCO3 crystals grown on clean washed green (c), white (d) microplastic particles, green particles + soap solution (e), and white particles + soap solution (f). The insets in (c)–(f) show an expanded region of the surface of the particles. The stock solution of particles (100 μL) and soap solution (10 μL) were used for crystallization.
