FORMATION OF CALCIUM PHOSPHATES IN MODERATELY SUPER-SATURATED SOLUTIONS

被引:84
作者
FEENSTRA, TP [1 ]
DEBRUYN, PL [1 ]
机构
[1] VANT HOFF LAB, TRANSITORIUM 3, PADUALAAN 8, UTRECHT, NETHERLANDS
关键词
D O I
10.1021/j100467a010
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The precipitation of calcium phosphates was studied by a method which allowed a desired supersaturation to be built up under well-defined conditions. Special attention was paid to the stage preceding the growth of nonstoichiometric apatitic crystals. Growth curves at pH 6.7, 7.4, and 8.5 and at 26 °C are presented. Analysis of these experimental data indicates octacalcium phosphate as an intermediate phase in the apatite formation process. Light scattering measurements suggest the formation process to be initiated by a heterogeneous nucleation step. © 1979 American Chemical Society.
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页码:475 / 479
页数:5
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