APPARENT SOLUBILITIES OF 2 AMORPHOUS CALCIUM PHOSPHATES AND OF OCTACALCIUM PHOSPHATE IN THE TEMPERATURE-RANGE 30-42-DEGREES-C

被引：131

作者：

CHRISTOFFERSEN, MR

CHRISTOFFERSEN, J

KIBALCZYC, W

机构：

[1] Medicinsk-Kemisk Institut, Panum Institute, University of Copenhagen, 2200 Copenhagen N

来源：

JOURNAL OF CRYSTAL GROWTH | 1990年 / 106卷 / 2-3期

关键词：

Calcium Phosphate - Octacalcium Phosphate;

D O I：

10.1016/0022-0248(90)90079-Z

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Precipitation of amorphous calcium phosphate and its transformation into crystalline materials are investigated. The variation in pH during the total process can be explained by initial formation of one amorphous phase, ACP1, followed by formation and growth of another amorphous phase, ACP2, causing dissolution of the initially formed phase. The amorphous phase ACP2 similarly dissolves due to formation and growth of octacalcium phosphate, OCP, which finally dissolves due to formation and growth of deficient hydroxyapatite. Apparent solubility products are determined for ACP1, ACP2 and OCP. From the variation of the solubility products with temperature, H{circled dash} and S{circled dash} for the dissolution of ACP1, ACP2 and OCP are determined. © 1990.

引用

页码：349 / 354

页数：6

共 15 条

[1] CONVERSION OF AMORPHOUS CALCIUM PHOSPHATE TO MICROCRYSTALLINE HYDROXYAPATITE - PH-DEPENDENT, SOLUTION-MEDIATED, SOLID-SOLID CONVERSION [J].