The influence of chromium ions on the growth of the calcium hydroxyapatite crystal
The influence of chromium ions on the growth of the calcium hydroxyapatite crystal作者机构：Department of BioPhysics Science College Ain Shams University Cairo Egypt Department of BioPhysics Science College Cairo Egypt Department of Physics Science College Benha University Benha Egypt
出 版 物：《Journal of Biophysical Chemistry》 (生物物理化学（英文）)
年 卷 期：2012年第3卷第4期
页 面：283-286页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Hydroxyapatite Crystal Calcium Growth Crystallinity Bioceramics
摘 要：Hydroxyapatite (Ca10(PO4)6(OH)2) is widely used as bio-ceramic materials and as adsorbents for separation of bio-molecules. These materials have also been used as adsorbents for heavy metals, supports and as catalysts in oxidation and dehydrogenation reactions. The catalytic performance of these materials depend on the lattice substitution of Ca sites in Hydroxyapatite structure by varied cations as Na, Mg, Sr and Mn, which result in changes in various structural pro perties as crystallinity and morphology. Pure calcium hydroxyapatite (S1) and Cr loaded hydroxyl apatite (S2, S3, S4 and S5) of different chromium concentrations have been prepared by wet precipitated method. An in-vitro examination is essential to investigate the mechanism of the deficient HA and tissue interface reaction by preparing SBF (Simulated Body Fluid) through the elemental and chemical analysis of Ca, P and Cr. FTIR used to analyze the samples after incubation in SBF for 24 day. PH of the samples also was measured at the first period of immersion time. At high loading of chromium ions, the formation of carbonate apatite decrease. The concentrations of the chromium in the Cr_HA crystal during the soaking in SBF are very safe dose for human.
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