RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Site Query Results

Binding Site Data:

Mineral:	Goethite
Reference:	HREL91
SCM Type:	TL - Triple Layer (C₁: 0.8 F/m², C₂: 0.2 F/m²)
Ionic Strength:	NaNO3
Site Type:	»Fe-OH
PZC:	8.6
pK1:	6.6	pK1_{2.31 nm⁻²} (normalized):	7.24
pK2:	10.6	pK2_{2.31 nm⁻²} (normalized):	9.96
Site Density in nm^-2:	10.0000
Original Site Density:	10.0 sites / nm² surface
Solid/Liquid Ratio in g/L:	15.0
pH Range:	5.5-11
Temperature in K:	298.15
Method for Site Density:	Best Estimate
Method for Protolysis:	Potentiometric Titration
Fit Method:	FITEQL
Comment:	suggested "standard" parameter values for goethite pK2-pK1 = 4.0; cited in [S03]; good fit with F=17.9

1 data sets were retrieved