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Synchrotron X-ray Scattering Studies at Mineral-Water Interfaces

Published online by Cambridge University Press:  15 February 2011

Ronald P. Chiarello and
Neil C. Sturchio
Ronald P. Chiarello
Affiliation:
Geoscience/CMT-205, Argonne National Laboratory, Argonne, IL 60439
Neil C. Sturchio
Affiliation:
Geoscience/CMT-205, Argonne National Laboratory, Argonne, IL 60439
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Abstract

Synchrotron X-ray scattering techniques provide a powerful tool for the in situ study of atomic scale processes occurring at solid-liquid interfaces. We have applied these techniques to characterize and study reactions at mineral-water interfaces. Here we present two examples. The first is the characterization of the calcite (CaCO3) (1014) cleavage surface, in equilibrium with deionized water, by crystal truncation rod measurements. The second is the in situ study of the heteroepitaxial growth of otavite (CdCO3) on the calcite (1014) cleavage surface. The results of such studies will lead to significant progress in understanding mineral-water interface geochemistry.

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