RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Goethite
Reference:	S79
SCM Type:	CC - Constant Capacitance
Ligand:	SO4<2-> - sulfate
Site Type:	»Fe-OH
Equation:	»Fe-OH + SO4<2-> ⇔ »Fe-SO4<1-> + OH<1->
LogK:	-5.8 LogK°_I=0 (Conversion to I = 0): -5.66 LogK_{2.31 nm⁻²} (SSD-normalized): -0.53
Experiment:	Potentiometric Titration
Ionic Strength:	0.0053 mol/L lake water
Solid/Liquid Ratio:	0.005 g/L
pH Range:	7.5
Ligand Concentration Range:	1E-4 mol/L
Fit Method:
Comment:	natural lake water: 3.2E-8 M H+, 4.9E-7 M OH-, 1E-4 M SO42-, 1E-6 M H2PO4-, 5E-4 M H4SiO4 (in [SS80] and [SKS80] 5E-5 M), 5E-3 M HCO3-, 2E-4 M Mg2+, 1E-3 M Ca2+, 1E-8 M Pb2+; SCM \"ligand exchange model\", cited in [SKS80] and [SS80]

1 data sets were retrieved