The usability of ark clam shell (Anadara granosa) as calcium precursor to produce hydroxyapatite nanoparticle via wet chemical precipitate method in various sintering temperature

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Table 6 The element composition present in the HA sample with different sintering temperature

Sintering temperature (°C)	Weight of element composition (wt%)				Ca:P ratio
Sintering temperature (°C)	Ca	P	C	O	Ca:P ratio
200	25.64	13.12	17.48	43.76	1.95
600	31.61	16.61	7.05	44.74	1.90
800	27.83	15.27	8.20	48.70	1.82
1000	34.45	17.35	7.27	40.92	1.98
1100	37.06	18.76	3.78	40.40	1.97
1200	30.96	18.63	3.41	47.00	1.66