Vega E D, Pedregosa J C, Narda G E, Morando P J
Area de Química General e Inorgánica Dr. Gabino Puelles, Facultad de Química, Bioquímica y Farmacia, Universidad Nacional de San Luis, Chacabuco y Pedernera (PID-CONICET 4929/96), Argentina.
Water Res. 2003 Apr;37(8):1776-82. doi: 10.1016/S0043-1354(02)00565-1.
The interaction of oxovanadium(IV) (VO(2+)) in aqueous solution with commercial calcium hydroxyapatite (CAP) has been studied. VO(2+) ions are adsorbed on the surface of CAP by coordination to OH groups, without modification of the crystalline lattice. The extent of the adsorption is followed by chemical analysis, ESR and IR spectroscopy. Results are compared with those obtained for VO(2+)/synthetic calcium hydroxyapatite (HAP), reported by us in previous works. The uptake is better than the observed for HAP. The maximum adsorption is observed at pH 3.5 and 288 K. We conclude that VO(2+) is indeed adsorbed on CAP and the extent of adsorption depends on the pH and temperature.
研究了水溶液中氧钒（IV）（VO(2+)）与商业羟基磷灰石（CAP）的相互作用。VO(2+)离子通过与OH基团配位吸附在CAP表面，而不改变晶格结构。通过化学分析、电子自旋共振（ESR）和红外光谱（IR）跟踪吸附程度。将结果与我们之前工作中报道的VO(2+)/合成羟基磷灰石（HAP）的结果进行比较。其摄取量优于HAP。在pH 3.5和288 K时观察到最大吸附量。我们得出结论，VO(2+)确实吸附在CAP上，吸附程度取决于pH和温度。
