Table 1.
Metal concentration in three different tissues of fish species obtained from Ogun and Eleyele Rivers.
| Site | Specie | Organ | Heavy Metals (10−5 mg/kg dw) |
||||||
|---|---|---|---|---|---|---|---|---|---|
| As | Cd | Co | Cr | Mn | Ni | Pb | |||
| Ogun River | Clarias gariepinus | Liver | 46.0 ± 33.0 | 3.05 ± 1.60 | 1.58 ± 1.5 | BDL | BDL | 5.9 ± 4.2 | 3.47 ± 2.15 |
| Muscle | 35.0 ± 30.0 | BDL | 1.55 ± 0.01 | 0.29 ± 0.10 | BDL | 7.8 ± 0.2 | 7.93 ± 1.43 | ||
| Gills | 580 ± 25.0 | 0.81 ± 0.42 | 2.58 ± 0.76 | 0.39 ± 0.00 | BDL | 12.0 ± 2.1 | 6.87 ± 4.99 | ||
| Sarotherodon melanotheron | Gills | 190.0 ± 62.0 | 3.2 ± 0.44 | 3.23 ± 2.45 | 1.17 ± 0.78 | 0.64 ± 0.59 | 10.0 ± 1.2 | 9.36 ± 0.00 | |
| Liver | 230..0 ± 128.0 | 4.2 ± 1.01 | 3.48 ± 0.13 | 0.39 ± 0.00 | 1.25 ± 0.93 | 17.0 ± 2.7 | 8.76 ± 1.87 | ||
| Muscle | 130.0 ± 28.0 | 3.2 ± 0.13 | BDL | 0.78 ± 0.39 | 1.48 ± 0.70 | 9.0 ± 0.8 | 5.01 ± 0.61 | ||
| Eleyele River | Clarias gariepinus | Gills | 69.0 ± 3.0 | 3.3 ± 0.11 | 2.05 ± 0.00 | 1.17 ± 0.00 | 1.82 ± 0.94 | 8.7 ± 0.7 | 8.13 ± 1.24 |
| Liver | BDL | 2.6 ± 0.70 | 1.82 ± 0.00 | 0.39 ± 0.00 | 1.93 ± 1.28 | 8.7 ± 0.1 | 6.87 ± 1.25 | ||
| Muscle | 130.0 ± 13.0 | 2.1 ± 0.63 | 3.48 ± 0.65 | 1.17 ± 0.78 | BDL | 4.3 ± 3.4 | 4.41 ± 3.72 | ||
| Sarotherodon melanotheron | Gills | 21.0 ± 17.0 | 2.8 ± 0.46 | 2.83 ± 0.26 | 0.12 ± 0.08 | BDL | 1.0 ± 0.1 | 1.12 ± 0.19 | |
| Liver | BDL | BDL | 0.08 ± 0.03 | BDL | BDL | 8.8 ± 7.6 | 2.53 ± 0.59 | ||
| Muscle | BDL | 0.65 ± 0.22 | 0.27 ± 0.17 | 0.16 ± 0.04 | BDL | 4.1 ± 2.3 | 7.85 ± 7.78 | ||
NB: BDL means Below Detection Limit.