Table 4.

Zeta (ζ) potentials evaluated in the uncoated and coated (CIT and PEG) metal oxide NPs (TiO₂ and CeO₂) at the highest exposure concentration once dispersed in the exposure media. The results expressed as mV.

	Cell Medium (mV)		Daphnia magna Medium (mV)		Oncorhynchus mykiss Medium (mV)
	Time 0	Time 24 h	Time 0	Time 48 h	Time 0	Time 96 h
Medium	−8.32		−10.35		−6.02
TiO2-UNC	−8.96	−11.03	28.50	27.53	27.40	26.63
TiO2-CIT	−11.40	−14.87	−33.80	−35.13	−36.63	−28.2
TiO2-PEG	−13.37	−9.65	−24.60	−23.80	−24.23	−21.67
CeO2-UNC	−9.72	−10.13	41.30	40.93	34.70	37.43
CeO2-CIT	−10.32	−10.19	−21.27	−21.23	−33.13	−26.57
CeO2-PEG	−9.36	−9.455	−12.33	−12.1	−15.60	−20