Table 1.

Hydrodynamic diameters and zeta potentials of NiONPs in different media

Dispersant	Hydrodynamic diameter (nm)	Polydispersity index	Zeta potential (mV)
DMEM (10% FBS)	313.2±12.6	0.28±0.01	−10.2±0.6
DMEM	302.6±10.3	0.26±0.02	−10.3±0.3
Saline	327.3±19.4	0.21±0.01	−1.9±0.2

Notes: The hydrodynamic diameter and zeta potential were determined for dispersions containing 19 µg/mL NiONPs (equal to 4 µg/cm² in a six-well plate) in the indicated media. Data are expressed as mean ± SEM (n=3).

Abbreviations: DMEM, Dulbecco’s Modified Eagle’s Medium; FBS, fetal bovine serum; NiONP, nickel oxide nanoparticle; SEM, standard error of the mean.