Table 3.
Quality parameters for chemical analysis of terrestrial foodstuffs.
| Heavy metals | DORM-4 certified values (μg/g) | DORM-4 obtained values (μg/g) | Proficiency test 07318 certified values for milk (μg/kg) | Proficiency test 07318 obtained values for milk (μg/kg) | Z-score (μg/kg) |
|---|---|---|---|---|---|
| Arsenic (As) | 6.87 ± 0.44 | 6.22 ± 0.51 | 76.4 | 65.00 | −0.7 |
| Cadmium (Cd) | 0.299 ± 0.018 | 0.301 ± 0.020 | 24.9 | 21.00 | −0.7 |
| Lead (Pb) | 0.404 ± 0.062 | 0.411 ± 0.048 | 70.4 | 70.00 | 0.0 |
| Mercury (Hg) | – | – | 34.9 | 42.00 | 0.9 |
| PAHs | Proficiency test 0677 certified values for smoked fish (μg/kg) | Proficiency test 0677 obtained values for smoked fish (μg/kg) | Z-score (μg/kg) | ||
| benzo(a)pyrene | 3.20 | 2.36 | −1.2 | ||
| benzo(a)anthracene | 11.5 | 10.37 | −0.5 | ||
| chrysene | 13.6 | 17.96 | 1.5 | ||
| benzo(b)fluoranthene | 5.29 | 5.26 | 0.0 |