Table 1.

Hydrodynamic diameter of 1 mg/L suspensions of silver nanoparticles (AgNPs) in the exposure medium.

	Hydrodynamic diameter (nm)a
Type	1 h	24 h	48 h	96 h
50–80 nm nanoplates	196 ± 15	352 ± 27	368 ± 41	382 ± 54
15 nm nanospheres	191 ± 12	346 ± 42	385 ± 36	393 ± 78∗
20–40 nm nanospheres	187 ± 5	337 ± 13	373 ± 21	387 ± 76∗
50 nm nanorods	288 ± 20	463 ± 48	487 ± 76	496 ± 148∗

^aHydrodynamic diameter are expressed as mean ± SD (n = 3). ^∗Statistical analysis was used to compare the significant difference of hydrodynamic diameter between 1 and 96 h (p < 0.05).