磷灰石的核磁共振研究--(Ⅰ)^19F的NMR谱学特征  

Nuclear Magnetic Resonance Study of Apatite Part Ⅰ:^(19)F NMR Spectroscopic Characteristics

作　　者：刘羽[1] 许涛[2] 王少怀[1] 

机构地区：[1]福州大学紫金矿业学院,福建福州350108 [2]中国地质大学材料科学与化学工程学院,湖北武汉430074

出　　处：《矿物学报》2009年第3期291-294,共4页Acta Mineralogica Sinica

摘　　要：对固相反应合成的氟羟磷灰石固溶体系列进行了19FMAS NMR分析,结果表明:当F含量较低时,只出现一个化学位移δ为-105.5的NMR峰,而当F相对含量超过(OH)的相对含量时,在δ为-103附近出现一个新的微弱肩状共振峰。随F含量增大,该峰相对强度逐渐增大,说明在高F含量的FHap结构中出现了两种化学环境下的F核。根据上述19F NMR峰的数量和位置,可以推断磷灰石中F—OH的相对含量和成键状态。The dependence of ^19 F NMR spectral behaviors of synthetic fluor-hydroxyapatites on the F contents was investigated. When F contents are low, only one NMR reassurance occurs at δ = -105.5. With increasing F contents, a new NMR resonance occurs near -103, whose intensity increases with F, meanwhile the intensity of former decreases, indicating that there are two structural environments for F ions in these samples. The estimation of F contents in binary fluor-hydroxyapatites with ^19F NMR spectroscopy is possible, as the position and intensity of these reassurances correlate with the F/OH ratio.

关 键 词：氟羟磷灰石 ^19F MAS NMR 化学位移 

分 类 号：P574[天文地球—矿物学] P578.92[天文地球—地质学]