Table 5 Comparison of the HMs results (mg/g ww) in the muscles of O. niloticus and C. gariepinus with other species in different areas and the international standard permissible limits.
Study Area | Fish Sp. | Cd | Cu | Pb | Mn | Zn | Ref. |
|---|---|---|---|---|---|---|---|
Great Cairo, Nile River | Oreochromis niloticus | 0.2–0.28 | 2.01–5.41 | 0.21–1.11 | 12.1–15.25 | 20.91–32.52 | Present Study |
C. gariepinus | 0.2–0.35 | 3.12–6.5 | 1.52–3.62 | 15.01–17.72 | 15.12–26.92 | ||
Great Cairo, Nile River | Oreochromis niloticus | 1.62–7.71 | 0.02–0.26 | 0.2–1.89 | 4.93–47.17 | 68 | |
S. galilaeus | 2.55–8.34 | 0.03–1.37 | 0.29–2.28 | 6.66–53.71 | |||
Damietta branch, Nile River | Oreochromis niloticus | 2.6–14.7 | 7.8–25.3 | – | 20.8–75.2 | 25.85–67.5 | 37 |
Rayahs, Nile River | Nile tilapia | Nd-2 | Nd-18.6 | Nd-15.4 | 1.1–56.90 | 8.4–98.4 | 65 |
Mango tilapia | Nd-0.3 | Nd-26.2 | Nd-19.4 | Nd-35.16 | Nd-64.4 | ||
Tilapia Zillii | Nd-1.1 | Nd-26.4 | Nd-16.3 | Nd-41 | 4.7–96.29 | ||
El Bahr El pharaony | Oreochromis niloticus | 0.021–0.037 | 0.82–3.65 | 1.72–5.64 | 0.24–2.52 | 5.35–16.56 | 42 |
North and Southeast Rivers, Iran | Oncirhynchus mykiss trout | – | 5.8–8.4 | 3.2–6.6 | – | 6.2–11.2 | 13 |
Standard Permissible level | 30 | 0.5 | 30 | 66 | |||
0.5 | 30 | 0.5 | 40 | 64 | |||
30 | 1 | 100 | 68 | ||||
0.2 | 2 | 60 | |||||
0.2 | 20 | 2 | 50 | 62 | |||
0.1 | 10 | 0.1 | 61 | ||||
0.05 | 0.2 | 63 | |||||
20 | 69 | ||||||
