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ZnO NP sedimentation and hydrodynamic size as a function of particle charge.
Notes: (A) The sedimentation of differently charged ZnO NPs in culture medium (0.3 mM) was analyzed over time using optical absorbance at 378 nm. A representative scan is shown. (B) NP hydrodynamic size was determined using a Malvern Zetasizer Nano ZS unit (n=3, ± standard error). Asterisks denote significant difference (P<0.05).
Abbreviation: NP, nanoparticle.
