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Natural abundance43Ca solid-state NMR characterisation of hydroxyapatite: identification of the two calcium sites

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Laurencin, Danielle, Wong, Alan, Dupree, Ray and Smith, Mark E. (2008) Natural abundance43Ca solid-state NMR characterisation of hydroxyapatite: identification of the two calcium sites. Magnetic Resonance in Chemistry, Vol. 46 (No. 4). pp. 347-350. doi:10.1002/mrc.2117

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Official URL: http://dx.doi.org/10.1002/mrc.2117

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Abstract

Natural abundance 43Ca solid-state NMR of hydroxyapatite (Ca10(PO4)6(OH)2) was performed at three different fields (8.45, 14.1 and 18.8 T). The two crystallographically distinct calcium sites of the apatite structure were spectroscopically resolved at 18.8 T. The 43Ca NMR interaction parameters (δiso, CQ and etaQ) of each site were determined by multiple magnetic-field simulations. The peaks with δiso = 11.2 ± 0.8 and − 1.8 ± 0.8 ppm, both with CQ = 2.6 ± 0.4 MHz, were assigned to the Ca(II) and Ca(I) sites, respectively, on the basis of their relative intensities.

Item Type: Journal Article
Divisions: Faculty of Science > Physics
Journal or Publication Title: Magnetic Resonance in Chemistry
Publisher: John Wiley & Sons Ltd.
ISSN: 07491581
Official Date: 2008
Dates:
DateEvent
2008Published
Volume: Vol. 46
Number: No. 4
Page Range: pp. 347-350
DOI: 10.1002/mrc.2117
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

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