An Infrared Method for Quantification of Carbonate in Carbonated Apatites
- 1 January 1984
- journal article
- research article
- Published by S. Karger AG in Caries Research
- Vol. 18 (1) , 63-66
- https://doi.org/10.1159/000260749
Abstract
Carbonated apatites of known carbonate content were used to develop a method which uses infrared (IR) spectroscopy for quantitative estimation of carbonate. The ratio of the extinction of the IR carbonate band at about 1,415 cm––1 to the extinction of the phosphate band at about 575 cm––1 is linearly related to the carbonate content of the carbonated apatite. Mixtures of BaCO3 and commercially available hydroxyapatite or tricalcium phosphate are used to standardize the apparatus. The method allows carbonate estimation to better than ± 10% in the range 1–12% wt/wt.Keywords
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