Gold Nanoparticles: Synthesis, Stability Test, and Application for the Rice Growth

Table 2

Zeta potential and size of citrate AuNPs in Milli-Q water.

Time (hour)	Zeta potential (mV)	Zeta potential (mV); (second measure)	Size 1 (nm)	Size 2 (nm)
0	−27.5	—	5.6	50.8
1	−16.1	—	5.6	50.8
2	−19.0	—	5.6	50.8
3	−17.1	−32.2	5.6	50.8
24	−37.5	—	5.6	50.8
72	−33.4	—	5.6	50.8
168	−39.9	—	5.6	50.8

“—” means no measurement has been done.