Solubility of Magnesium-Containing β-Tricalcium Phosphate: Comparison with that of Zinc-Containing β-Tricalcium Phosphate

Abstract:

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The purpose of this study was to determine the solubility of magnesium-containing tricalcium phosphate (MgTCP) over a magnesium content range from 0 to 10 mol%, and to compare it with that of zinc-containing tricalcium phosphate (ZnTCP). MgTCP powders with various Mg contents were immersed in 0.08M acetic acid and sodium acetate buffer solution of pH 5.5 at 25±2 °C. Solubility product, Ksp = (Ca2+)3-x(Mg2+)x(PO4 3-)2, was calculated. From the Ksp data, the solubility of MgTCP in the pH range from 5 to 7.5 was inversely calculated. The solubility of MgTCP decreased with increasing Mg content. The negative logarithm of solubility product (Ksp) was regressed as pKsp = 29.041+0.90467C-0.18069C2+0.025962C3-0.00192C4-0.000055199C5 , where C is the Mg content of MgTCP in mol%. In the magnesium content range from 0 to 10 mol%, the solubility of MgTCP is higher than that of ZnTCP containing the same amount of zinc.

Info:

Periodical:

Key Engineering Materials (Volumes 309-311)

Main Theme:

Edited by:

Takashi Nakamura, Kimihiro Yamashita and Masashi Neo

Pages:

239-242

DOI:

10.4028/www.scientific.net/KEM.309-311.239

Citation:

A. Ito et al., "Solubility of Magnesium-Containing β-Tricalcium Phosphate: Comparison with that of Zinc-Containing β-Tricalcium Phosphate ", Key Engineering Materials, Vols. 309-311, pp. 239-242, 2006

Online since:

May 2006

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Price:

$35.00

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