Ion-exchange property and mechanism of magnesium–calcium hydroxyapatite solid solutions
Ion-exchange property and mechanism of magnesium–calcium hydroxyapatite solid solutions
复制标题
镁钙羟基磷灰石固溶体的离子交换性能及机理
DOI：
10.1016/j.colsurfa.2004.03.001
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
T. Ishikawa
中科院分区：
文献类型：
--
作者：
A. Yasukawa;T. Yokoyama;K. Kandori;T. Ishikawa
将镁钙羟基磷灰石（MgCaHap）固溶体颗粒浸入含钙离子的溶液中，改变溶液中钙离子浓度、浸泡时间、溶液pH值和温度。MgCaHap颗粒中的Mg 2+离子被释放到溶液中，伴随着Ca 2+离子从溶液中通过处理并入到颗粒中，这表明MgCaHap中的Mg 2+被Ca 2+交换。在15- 30 min内达到离子交换平衡。提高溶液中Ca ~（2+）浓度、温度和降低溶液pH值均有利于离子交换。MgCaHap颗粒表面层的溶解和颗粒表面羟基磷灰石（Hap）层的重结晶是Mg 2+与Ca ~（2+）交换的主要原因。
Magnesium–calcium hydroxyapatite solid solution (MgCaHap) particles were immersed into solutions containing Ca2+ions under different conditions where Ca2+concentration, immersion period, solution pH and temperature were varied. Mg2+ions in the particles were released into the solution accompanying the incorporation of Ca2+ions from the solution into the particles by the treatment, which demonstrates that Mg2+in MgCaHap was exchanged by Ca2+. The ion-exchange equilibrium was attained within a short time of 15–30min. The ion-exchange was promoted by raising the Ca2+concentration and solution temperature and by lowering the solution pH. The exchange of Mg2+with Ca2+was shown to take place by the dissolution of surface layer of the MgCaHap particles and the recrystallization of a new hydroxyapatite (Hap) layer on the particles.
人类牙本质的恒定成分溶解动力学研究。
影响因子：
7.6
作者：
Paschalis,EP;Tan,J;Nancollas,GH
通讯作者：
Nancollas,GH