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Size distribution monitored by dynamic light scattering (DLS) of TiO2-NM1 incubated in the single simulated fluids (A,B) or after the digestion cascade (C,D). The measurements were performed on the treated sample and on the sample treated and washed with water. The hydrodynamic diameters (dH) distribution (% intensity) is expressed as mean value of 5 measurements in three independent experiments ±SD.
