RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Site Query Results

Binding Site Data:

Mineral:	Goethite
Reference:	GS93
SCM Type:	CC - Constant Capacitance (C₁: 1.28 F/m²)
Ionic Strength:	0.1 mol/L of NaNO3
Site Type:	»Fe-OH
PZC:
pK1:	7.47	pK1°_I=0 (Conversion to I = 0):	7.36	pK1_{2.31 nm⁻²} (normalized):	7.28
pK2:	9.51	pK2°_I=0 (Conversion to I = 0):	9.40	pK2_{2.31 nm⁻²} (normalized):	9.70
Site Density in nm^-2:	1.5000
Original Site Density:	1.5 sites / nm² surface
Solid/Liquid Ratio in g/L:	11.3
pH Range:	2.5-8.5
Temperature in K:	298.15
Method for Site Density:	Potentiometric Titration
Method for Protolysis:	Literature
Fit Method:	FITEQL
Comment:	pK values and capacity from [LSS90], background electrolyte was sometimes also NaCl; temperature 298.15+-0.05 K

1 data sets were retrieved