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: 2.2 F/m2,  C2: 2.8 F/m2)
Ionic Strength: 0.005 mol/L of KNO3
Site Type: »Fe-OH
PZC:
pK1: 7.17 pK1°I=0 (Conversion to I = 0): 7.14 pK12.31 nm−2 (normalized): 7.06
pK2: 9.88 pK2°I=0 (Conversion to I = 0): 9.85 pK22.31 nm−2 (normalized): 9.99
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: 298.15
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 10, 40, 55 and 70°C are reported
 
1 data sets were retrieved