Charge determination at calcium salt/aqueous solution interface
- 1 January 1979
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 75, 1034-1039
- https://doi.org/10.1039/f19797501034
Abstract
It is shown that the fundamental potential determining ion system for Ca3(PO4)2 and CaCO3 particles is the Ca2+/anion pair rather than H+/OH–. In addition, the electrical capacity of the inner region of the electric double layer at the aqueous solution interface with both salts near their isoelectric points is ∼40 µF cm–2, with electrokinetic potentials equal to inner diffuse layer potentials.Keywords
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