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

Table 3

Zeta potential and size of citrate AuNPs in pH 4 buffer.

Time (hour)	Zeta potential (mV)	Size (nm)
0	−46.1	342.0
1	−39.4	825.0
2	−38.8	531.2
3	−36.0	255.0
24	−33.0	295.3
72	−29.9	712.4
168	−13.9	141.8