Analyses of mineral specific surface area and hydroxyl substitution for intact bone.

Analyses of mineral specific surface area and hydroxyl substitution for intact bone.
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DOI:
10.1016/j.cplett.2013.09.061
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发表时间:
2013-11-19
影响因子:
2.8
通讯作者:
Zhou, Donghua H.
Zhou, Donghua H.
中科院分区:
化学4区
文献类型:
--
作者:
Taylor, Amanda J.;Rendina, Elizabeth;Smith, Brenda J.;Zhou, Donghua H.

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骨矿物有两个主要的氢源:纳米晶核心中的氢氧化物离子和非晶层中的结构水。为了用氢磷交叉极化核磁共振光谱准确地测量它们的浓度,有必要分析信号强度与串联接触时间的关系,即交叉极化动力学。开发了一种可靠的方法来迭代分解严重重叠的光谱并分析交叉极化动力学,从而导致羟基和结构水浓度的测量。结构水浓度被用来估算完整骨的矿物比表面积和纳米晶厚度。
Bone minerals possess two primary hydrogen sources: hydroxide ions in the nanocrystalline core and structural water in the amorphous surface layer. In order to accurately measure their concentrations using hydrogen to phosphorus cross polarization NMR spectroscopy, it is necessary to analyze the dependence of signal intensities on serial contact times, namely, cross polarization kinetics. A reliable protocol is developed to iteratively decompose the severely overlapped spectra and to analyze the cross-polarization kinetics, leading to measurement of hydroxyl and structural water concentrations. Structural water concentration is used to estimate mineral specific surface area and nanocrystal thickness for intact bone.
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