Table 1.

Concentration of heavy metals in gilthead sea bream side streams.

Sea Bream Side Streams	Heavy Metals (µg/g of Wet Weight)
	As	Hg	Cd	Pb
Muscle	0.9381 ± 0.0110	0.0886 ± 0.0014	0.0008 ± 0.0001	0.0054 ± 0.0010
Head	0.8589 ± 0.0370	0.0593 ± 0.0001	0.0019 ± 0.0001	0.0190 ± 0.0002
Viscera	2.5865 ± 0.0233	0.0466 ± 0.0007	0.0683 ± 0.0007	0.0345 ± 0.0046
Skin	0.9694 ± 0.0966	0.0261 ± 0.0030	0.0101 ± 0.0003	0.0614 ± 0.0006
Tailfin	0.4406 ± 0.0055	0.0422 ± 0.0009	0.0079 ± 0.0004	0.0467 ± 0.0007
Legislation *	<13.5	<0.50	<0.05	<0.30

* Values referred to fish muscle tissue [6,9,26].