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: 2.3 F/m², C₂: 2.9 F/m²)
Ionic Strength:	0.005 mol/L of KNO3
Site Type:	»Fe-OH
PZC:
pK1:	7.66	pK1°_I=0 (Conversion to I = 0):	7.63	pK1_{2.31 nm⁻²} (normalized):	7.55
pK2:	10.21	pK2°_I=0 (Conversion to I = 0):	10.18	pK2_{2.31 nm⁻²} (normalized):	10.32
Site Density in nm^-2:	1.8066
Original Site Density:	3.0 µmol / m² surface
Solid/Liquid Ratio in g/L:	1.9
pH Range:	3-9
Temperature in K:	283.15
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=2µmol/m^2); also datasets for 25, 40, 55 and 70°C are reported

1 data sets were retrieved