Thermodynamic properties of aqueous arsenic species and scorodite solubility

Nordstrom, D.K., Zhu, X., McCleskey, R.B., Königsberger, L.C. and Königsberger, E.ORCID: 0000-0002-4606-0741 (2017) Thermodynamic properties of aqueous arsenic species and scorodite solubility. Procedia Earth and Planetary Science, 17 . pp. 594-597.

Abstract

An internally consistent thermodynamic network for arsenic minerals and aqueous species is being developed based on a high quality starting point: arsenolite and arsenolite solubility. Current research is refining the properties of scorodite solubility as a function of temperature along with improved aqueous species stability constants and activity coefficients for ions and ion pairs based on potentiometric measurements of redox, pH, and conductivity for 5-90 °C. The second and third hydrolysis constants for arsenic acid have been calculated as a function of temperature and thermodynamic properties have been derived.

Item Type:	Journal Article
Murdoch Affiliation(s):	School of Engineering and Information Technology
Publisher:	Elsevier B.V.
Copyright:	© 2017 Elsevier B.V
URI:	http://researchrepository.murdoch.edu.au/id/eprint/35159

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