RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Site Query Results

Binding Site Data:

Mineral:	Goethite
Reference:	AWJ06a
SCM Type:	ECC - Extended Constant Capacitance (C₁: 2.1 F/m², C₂: 2.7 F/m²)
Ionic Strength:	0.005 mol/L of KNO3
Site Type:	»Fe-OH
PZC:
pK1:	6.79	pK1°_I=0 (Conversion to I = 0):	6.76	pK1_{2.31 nm⁻²} (normalized):	6.70
pK2:	9.86	pK2°_I=0 (Conversion to I = 0):	9.83	pK2_{2.31 nm⁻²} (normalized):	9.95
Site Density in nm^-2:	1.8668
Original Site Density:	3.1 µmol / m² surface
Solid/Liquid Ratio in g/L:	1.9
pH Range:	3-9
Temperature in K:	313.15
Method for Site Density:	Sorption Isotherms
Method for Protolysis:	Potentiometric Titration
Fit Method:	FITEQL
Comment:	FITEQL and GRFIT; pK and SSD from [AWJ99b] (but there SSD=2.1 µmol/m^2); also datasets for 10, 25, 55 and 70°C are reported

1 data sets were retrieved