Table 1.

The ionic concentrations of Sr, Si, Ca and P in SPS extracts

Ionic Con. (mg/L)	Powders extracts concentrations (mg/mL)
	0 (CTR)	3.125	6.25	12.5	25	50	100	200
Sr	0.04±0.01	0.79±0.10	1.54±0.10	2.86±0.21	5.39±0.30	10.47±1.15	19.19±2.06	35.96±3.85
Si	0.06±0.01	1.80±0.01	3.54±0.01	6.99±0.14	13.97±0.47	27.28±1.17	54.38±2.16	108.37±4.39
Ca	72.61±1.03	72.30±1.12	68.87±2.70	64.53±3.69	60.30±2.18	51.15±0.74	54.38±1.11	13.18±0.42
P	31.08±0.62	30.69±0.35	29.59±0.21	26.82±0.18	23.30±0.16	20.37±0.14	16.23±0.12	11.44±0.11