RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

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Binding Site Data:


Mineral: Rutile
Reference: JP82
SCM Type: TL - Triple Layer   (C1: 1.1 F/m2,  C2: 0.2 F/m2)
Ionic Strength: 0.0 mol/L of KNO3
Site Type: »Ti-OH
PZC: 5.8
pK1: 2.6 pK1°I=0 (Conversion to I = 0): 2.60 pK12.31 nm−2 (normalized): 3.32
pK2: 9.0 pK2°I=0 (Conversion to I = 0): 9.00 pK22.31 nm−2 (normalized): 8.28
Site Density in nm-2: 12.2000
Original Site Density: 12.2 sites / nm² surface
Solid/Liquid Ratio in g/L:
pH Range: 4-10
Temperature in K: 298.15
Method for Site Density: Literature
Method for Protolysis:Potentiometric Titration
Fit Method:graphic extrapolation
Comment: raw data from [Y75]; 0.1-0.001M KNO3, pK from table 8 (other in figure 18) [JP82]; PZC=PZNPC is calculated in [LMB95] (PZC=1/2(pK1+pK2) for infinite dilution, SSA not cited in [LMB95]!; SSD from [Y75] (tritium exchange and geometrical calculation; there 12.2 for geometrical calcualtion and 12.5 for tritium exchange); SSA from original reference
 
1 data sets were retrieved