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Physico-chemical aspects of calcium vanadate apatite

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Abstract

By appropriate modifications of existing precipitation methods, a sample of calcium vanadate apatite, Ca10(VO4)6(OH)2 was prepared at 110°C. It was characterized through X-ray, electron microscopic, infrared and thermoanalytical analyses in addition to chemical analysis. Equilibrating the sample in buffered aqueous media at 37° C, the solubility was measured using microanalytical techniques of Ca2+ and VO4 3− present in the saturated solutions after separating the colloidal component of the solute. Duration of equilibration for the attainment of saturation of the solution of the sample was obtained from a study on its dissolution kinetics. The pK ip of calcium vanadate apatite was found to be 107.09. The investigation showed that pK ip was independent of the presence of the common ions.

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Authors and Affiliations

  1. Department of Chemistry, School of Physical Sciences, North-Eastern Hill University, 793003, Shillong, India

    S. K. Gupta, P. V. R. Rao & T. S. B. Narasaraju

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  1. S. K. Gupta
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  2. P. V. R. Rao
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  3. T. S. B. Narasaraju
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Gupta, S.K., Rao, P.V.R. & Narasaraju, T.S.B. Physico-chemical aspects of calcium vanadate apatite. J Mater Sci 21, 161–164 (1986). https://doi.org/10.1007/BF01144715

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