Table 1.

Parameters of SPION^Cit and SPION^HAp. Measurements were performed in triplicate.

	SPIONCit	SPIONHAp
Z-average in nm	109 ± 1	190.7 ± 11.5
polydispersity index	0.189 ± 0.01	0.114 ± 0.02
ζ in mV	−46.9 ± 0.9	−28.1 ± 1.37