pH Dependence of Solubilities of (Ca + Ba + Mg) Hydroxylapatites
Prema N. Patel* and Hemadri Ch. Pandey
Post- Graduate Department of Chemistry, G.M. College, Sambalpur 768 004, India

The solubilities of solid solutions of calcium-barium-magnesium hydroxylapatites determined in the pH range 5.0–8.0 decrease with increase in pH of the dissolving medium. This is due to the dissolved phosphate ions function as proton-acceptors and being salts of weak acid undergoes hydrolyses in aqueous media and at a given pH also the solubility of the samples decrease with increase of mole content of barium and magnesium in CaHA.


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  • Asian J. Chem. /
  •  1991 /
  •  3(4) /
  •  pp 347-350