RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Site Query Results

Binding Site Data:

Mineral:	Goethite
Reference:	LE94
SCM Type:	CC - Constant Capacitance (C₁: 0.4 F/m²)
Ionic Strength:	0.001 mol/L of NaCl
Site Type:	»Fe-OH
PZC:	9.1
pK1:	7.092	pK1°_I=0 (Conversion to I = 0):	7.08	pK1_{2.31 nm⁻²} (normalized):	7.17
pK2:	11.11	pK2°_I=0 (Conversion to I = 0):	11.09	pK2_{2.31 nm⁻²} (normalized):	11.04
Site Density in nm^-2:	2.7400
Original Site Density:	2.74 sites / nm² surface
Solid/Liquid Ratio in g/L:	3.612
pH Range:	5-10
Temperature in K:	298.15
Method for Site Density:	Potentiometric Titration
Method for Protolysis:	Potentiometric Titration
Fit Method:	FITEQL
Comment:	reported values are for I=0.001 M, other ionic strengths were 0.01 and 0.1 M; optimum PZNPC in the range 9.05 to 9.10; temperature 25+-0.2°C; cited in [S03], good fit with Vy=10.9

1 data sets were retrieved