Mineral Element Contents in Commercially Valuable Fish Species in Spain

Table 3

Reference material recovery study.

Element	Certified value (μg g^−1)	Obtained value (μg g^−1)	Recovery (%)	RSD (%)
Fe	347±20	343±18	98.8	5.24
Zn	51.3±3.1	53.21±3.48	103.7	6.54
Hg	0.382±0.06	0.370±0.02	97.0	5.40
As	6.88±0.30	6.811±0.46	99.0	6.75
Cr	1.89±0.17	1.92±0.12	101.5	6.25
Cu	15.50±0.63	15.11±0.41	97.5	2.71
Ni	1.28±0.24	1.25±0.13	98.3	10.4
Pb	0.395±0.05	0.386±0.02	97.8	5.18
Cd	0.290±0.02	0.284±0.01	98.0	3.52
Sn	0.066±0.012	0.064±0.002	97.3	3.12

Mean ± standard deviation; RSD: relative standard deviation.