RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Show Detailed Complexation Query Results

Surface Complex Formation Data:

Mineral:	Goethite
Reference:	BPS00c
SCM Type:	CDM - (CD-)MUSIC
Ligand:	PMA<4-> - pyromellitate
Site Type:	»Fe-singly
Equation:	2 »Fe-singly + PMA<4-> + 2 H<1+> ⇔ (»Fe-singlyH)2-PMA<3->
LogK:	21.36 ± 0.07 LogK°_I=0 (Conversion to I = 0): 23.29 LogK_{2.31 nm⁻²} (SSD-normalized): 21.51
Experiment:	Potentiometric Titration
Ionic Strength:	0.1 mol/L NaNO3
Temperature:	298.15 K
Solid/Liquid Ratio:	5.0 g/L
pH Range:	3-10
Ligand Concentration Range:	2.24E-3. 3.36E-3. 6.71E-3 mol/L
Fit Method:	FITEQL
Comment:	{110} plane; equation 2H<+> + 2[=FeOH<-0.5>]{110} + PMA<4-> = [(=FeOH2<+0.5>)2PMA<4->]{110}; for adsorption experiments: C1=1.4 F/m^2, C2=1.76 F/m^2

1 data sets were retrieved