Table 2.

At 0 and 96 h, hydrodynamic size and zeta potential average values of the polystyrene nanoplastics in the stock dispersion (at 0.001%) and in the medium used in the bioassays, at the tested concentrations (in the absence and presence of organisms and in combination with simvastatin (SIM)).

Nanoplastics	Hydrodynamic Size (nm)		Zeta Potential (mV)
	0 h	96 h	0 h	96 h
Stock dispersion	69	69	−29	−29
In test media (without organisms)	66	66	−25	−25
In test media (with organisms)	68	294	−26	−23
In test media (with SIM)	77	305	−12	−12