Identification of Amorphous CaCO3 in Aqueous Solution Using XANES Analysis
- 5 August 2020
- journal article
- research article
- Published by The Chemical Society of Japan in Chemistry Letters
- Vol. 49 (8), 982-985
- https://doi.org/10.1246/cl.200328
Abstract
CaCO3 is used by many invertebrates for biomineralization. Organic materials in biominerals stabilize amorphous CaCO3 (ACC). Investigation of biomineral formation requires analysis of ACC. X-ray absorption near edge structure (XANES) analysis was used to examine the chemical form of Ca in ACC solutions. The Ca K-edge XANES spectra showed that Ca in a solution containing phosphate and magnesium ions existed as a form of ACC. Ca K-edge XANES analysis can be useful to identify ACC in solution under atmospheric conditions.Keywords
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