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: 1.9 F/m², C₂: 2.5 F/m²)
Ionic Strength:	0.005 mol/L of KNO3
Site Type:	»Fe-OH
PZC:
pK1:	5.91	pK1°_I=0 (Conversion to I = 0):	5.88	pK1_{2.31 nm⁻²} (normalized):	5.84
pK2:	8.86	pK2°_I=0 (Conversion to I = 0):	8.83	pK2_{2.31 nm⁻²} (normalized):	8.93
Site Density in nm^-2:	1.9873
Original Site Density:	3.3 µmol / m² surface
Solid/Liquid Ratio in g/L:	1.9
pH Range:	3-9
Temperature in K:	343.15
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=2.3 µmol/m^2); also datasets for 10, 25, 40 and 55°C are reported

1 data sets were retrieved