From: Colloid stability of iron compounds in groundwater of Western Siberia
Iron ion concentration, mg/L
Silicon ion concentration, mg/L
Average particle size, nm
ζ- potential, mV
рН
5.6
5.0
175
-38
10.0 ± 0.2
10.0
167
-45
16.0
78
-48
20.0
82
-50