Table 2.

XPS analyses (%).

Group	O1s	Na1s	Mg1s	Si2p	P2p	S2p	Ca2p	Mg/Ca	P/Ca	P/Ca + Mg
β-TCP/Mg	48.43	3.67	2.08	0.74	8.79	0.39	12.36	16.80%	71.10%	60.90%
β-TCP	49.74				11.8	0.83	16.36	0.00%	72.10%	72.10%