RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Site Query Results

Binding Site Data:

Mineral:	Vernadite
Reference:	BM82a
SCM Type:	TL - Triple Layer
Ionic Strength:	0.0 mol/L of NaCl
Site Type:	Mn
PZC:	1.5
pK1:	4.2	pK1°_I=0 (Conversion to I = 0):	4.20	pK1_{2.31 nm⁻²} (normalized):	6.18
pK2:		pK2°_I=0 (Conversion to I = 0):
Site Density in nm^-2:	221.3508
Original Site Density:	0.0272 mol / g solid
Solid/Liquid Ratio in g/L:
pH Range:
Temperature in K:
Method for Site Density:	Tritium Exchange
Method for Protolysis:	Potentiometric Titration
Fit Method:	graphic extrapolation
Comment:	PZC=1.5+-0.2; double extrapolation technique [DJL78] for determination of pK2: plotting the ionization term for 0.015, 0.1, and 1 M NaCl and extrapolation to c=0 and fraction of ionized sites (alpha)=0; SSD seems to be very high; pH 2-10

1 data sets were retrieved