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Kinetics of Cross‐Polarization in Solid‐State NMR: A Guide for Chemists
Kinetics of 1H → 31P NMR cross‐polarization in bone apatite and its mineral standards
It was found that carbonatoapatite shows similar CP behavior to the bone mineral, and a structured water layer is provided, which covers crystal surface of carbonato‐ and bone apatite, which encompasses ca 40% of apatites phosphorus and its thickness is more than ca 2 nm. Expand
1H MAS and 1H → 31P CP/MAS NMR Study of Human Bone Mineral
- A. Kaflak-Hachulska, A. Samoson, W. Kołodziejski
- Chemistry, Medicine
- Calcified Tissue International
- 10 September 2003
There is a similarity between CHA-B and bone mineral expressed by their similar NMR behavior, and it is suggested that the sidebands of CP spectra are particularly suitable for monitoring the state of apatite crystal surfaces. Expand
Kinetics of cross-polarization in solid-state NMR: a guide for chemists.
Carbon-13 nuclear magnetic resonance spectrometry with cross polarization and magic-angle spinning for analysis of lodgepole pine wood
Solid-state NMR studies of bone.
- W. Kołodziejski
- Chemistry, Medicine
- Topics in current chemistry
NMR spectroscopy was mostly applied to the bone mineral and confirmed that the structure resembles that of calcium carbonatoapatite of type B, and apatite in bone was found to be deficient in structural hydroxyl groups. Expand
Incorporation of carbonate and magnesium ions into synthetic hydroxyapatite: The effect on physicochemical properties
Abstract Hydroxyapatite (HA), magnesium containing hydroxyapatite (Mg-HA) and magnesium containing carbonated apatite (Mg-CHA) were prepared by the wet chemical synthesis. Various analytical methods,… Expand
Concentration of hydroxyl groups in dental apatites: a solid-state 1H MAS NMR study using inverse 31P -->1H cross-polarization.
The concentration of structural hydroxyl groups in the apatite mineral of enamel, dentin and cementum of healthy human teeth was estimated by reference to stoichiometric hydroxyapatite to be 73 +/-… Expand
Phosphorus-31 spin-lattice NMR relaxation in bone apatite and its mineral standards.
The (31)P spin-lattice relaxation was discussed for trabecular and cortical bone tissue from adult subjects in comparison to the synthetic mineral standards, and it was concluded that the effect of water on T(1 rho)(P) is much more pronounced than on T (1)(P). Expand
Solid-state MAS NMR, TEM, and TGA studies of structural hydroxyl groups and water in nanocrystalline apatites prepared by dry milling
It was confirmed that concentration of structural hydroxyl groups in nanocrystalline apatites decreases with the decreasing crystal size, and the decrease was from 86 to ca. Expand