Table 1.

Time evolution of the hydrodynamic diameter and zeta potential of 53 nm silica nanoparticles in different dispersion medium

Time (hours)	Distilled water			1640 culture medium
	Size (nm)	Polydispersity index	Zeta potential (mV)	Size (nm)	Polydispersity index	Zeta potential (mV)
0	88.07	0.081	−34.4	92.89	0.112	−29.7
3	90.25	0.074	−36.1	89.46	0.089	−31.4
6	89.52	0.083	−32.3	91.77	0.123	−27.5
24	87.24	0.067	−35.8	90.02	0.116	−28.8