. Author manuscript; available in PMC: 2011 Aug 25.

Published in final edited form as: J Am Chem Soc. 2010 Aug 25;132(33):11504–11509. doi: 10.1021/ja101961x

Table 1.

NMR parameters (isotropic chemical shift, δ_iso, quadrupole coupling constant, C_Q, and asymmetry parameter, η_Q) obtained from a comparison of experimental and simulated ⁴³Ca MAS spectra of hydroxyapatite, carbonated apatite and bovine cortical bone samples.

	δ_iso(ppm)	C_Q(MHz)	η_Q
Hydroxyapatite:
Ca II	14	2.6	0.6
Ca I	2	2.6	0.4
Carbonated apatite (5%):
Ca II	13	2.6	0.6
Ca I	0	2.6	0.4
Carbonated apatite (10%):
Ca II	11.5	2.6	0.6
Ca I	−2	2.6	0.4
Bovine cortical bone:
Ca II	10	4	0.6
Ca I	−2	4	0.4