Table 3.

Heavy elements content of BHAp and CHAp samples measured by ICP-OES.

Element	BHAp (ppm)	CHAp (ppm)	Values accepted ISO 13779-1:2008 (ppm)
As	0.00	0.09	<3
Cd	0.00	0.00	<5
Pb	0.02	0.03	<30
Hg	0.00	0.00	<5