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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/2068

Title: Determination of diffuse double layer protonation constants for hydrous ferric oxide (HFO): supporting evidence for the Dzombak and Morel compilation
Authors: Pretorius, PJ
Linder, PW
Keywords: Surface complexation
Diffuse double layer
Hydrous ferric oxide
Surface protonation
Adsorption
Biochemistry
Environmental sciences
Molecular biology
Issue Date: 1998
Publisher: Science & Technology Letters
Citation: Pretorius, PJ and Linder, PW. 1998. Determination of diffuse double layer protonation constants for hydrous ferric oxide (HFO): supporting evidence for the Dzombak and Morel compilation. Chemical Speciation and Bioavailability, vol. 10(2), pp 115-119
Abstract: The acid-base properties of hydrous ferric oxide were studied by glass electrode potentiometry. From the potentiometric data, surface protonation constants were derived according to the Diffuse Double Layer convention. Chemical equilibrium modelling of the experimental system suggests that titration points below pH 4 should not be used for the determination of protonation constants because of potential HFO dissolution. Surface protonation constant, PZC and binding site estimates agree excellently with currently available best estimates.
URI: http://hdl.handle.net/10204/2068
http://hdl.handle.net/10204/2068
ISSN: 0954-2299
Appears in Collections:General science, engineering & technology
Discovery chemistry

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