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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。
19FMAS NMR analysis of the solid solution of fluoro hydroxyapatite synthesized by the solid-phase reaction showed that there was only one NMR peak with a chemical shift δ of -105.5 when the F content was low, and when the relative content of F exceeded (OH ), A new weak shoulder-shaped resonance peak appears near δ of -103. With the increase of F content, the relative intensity of the peak gradually increases, indicating that F nuclear F nuclear structure appears in two chemical F nuclear F environments. Based on the above-mentioned 19F NMR peak numbers and positions, the relative content of F-OH in the apatite and the bonding state can be inferred.