Metallic Contamination of the Muscles of Three Fish Species from the Moulouya River (Lower Moulouya, Eastern Morocco)

Table 2

Trace metals determination in proficiency tests (FAPAS canned fish samples).

Trace metals	Reference value (mg/kg) ± SD	Observed value (mg/kg) ± SD	Recovery (%)
Cd	6.2100 ± 1.5100	6.0655 ± 0.2636	97.67
Pb	0.0526 ± 0.0232	0.0515 ± 0.0083	97.91
Hg	0.1080 ± 0.0455	0.1085 ± 0.0129	100.46

SD: standard deviation.