Titanium dioxide nanoparticle impact and translocation through ex vivo, in vivo and in vitro gut epithelia

Table 2 Stability of the TiO ₂ -NP suspension in serum-containing cell culture medium ^a

Time after dilution	0 h	24 h	48 h
Z-average (d, nm)^b	320.5	332.4	323.5
PdI^c	0.290	0.260	0.280
ζ (mV)^d	-10.8 ± 0.6	-11.5 ± 0.3	-10.3 ± 0.5

^aDLS measurements obtained on a 50 μg/mL TiO₂-NP suspension, immediately after dilution (0 h) or after 24 or 48 h. ^bZ-average hydrodynamic diameter extracted by cumulant analysis of the data. ^cPdI: polydispersity from cumulant fitting. ^dζ: zeta potential.

ISSN: 1743-8977