Research Article
Heavy Metal Concentrations in Fish from River Tano in Ghana and the Health Risks Posed to Consumers
Table 3
Levels of heavy metals in the muscles of fish samples from River Tano.
| Fish species | Heavy metal concentration ± SD (mg/kg) | Cu | Pb | Cd | As | Hg | Cr | Zn |
| M. rume | <0.3 | 0.12 ± 0.06 | 0.03 ± 0.02 | 3.00 ± 0.01 | 1.01 ± 0.03 | 14.9 ± 0.02 | 9.91 ± 1.30 | L. niloticus | <0.3 | 0.10 ± 0.01 | 0.01 ± 0.05 | 1.55 ± 0.10 | 1.1 ± 0.14 | 32.2 ± 14.3 | 11.7 ± 4.67 | O. niloticus | <0.3 | 0.16 ± 0.05 | <0.3 | 1.52 ± 0.70 | 0.58 ± 0.69 | 27.0 ± 36.6 | 10.8 ± 2.10 | C. johnelsi | <0.3 | 0.08 ± 0.04 | 0.02 ± 0.10 | 2.17 ± 0.20 | 1.57 ± 2.0 | 33.0 ± 15.5 | 12.2 ± 8.01 | C. gariepinus | <0.3 | 0.13 ± 0.03 | 0.01 ± 0.07 | 1.01 ± 0.08 | 1.00 ± 0.04 | 16.1 ± 2.40 | 10.8 ± 2.76 | P. obscura | <0.3 | 0.04 ± 0.01 | 0.01 ± 0.01 | 1.57 ± 0.65 | 1.58 ± 0.74 | 17.9 ± 11.3 | 12.4 ± 3.38 | S. melanotheron | <0.3 | <0.5 | 0.01 ± 0.01 | 1.09 ± 0.17 | 2.07 ± 1.90 | 17.8 ± 0.07 | 8.42 ± 6.15 | C. gariepinus | <0.3 | 0.01 ± 0.10 | 0.01 ± 0.06 | 2.61 ± 0.55 | 2.01 ± 1.40 | 40.4 ± 10.4 | 12.5 ± 2.17 | S. galilaeus | <0.3 | 0.02 ± 0.01 | <0.3 | 2.57 ± 0.82 | 2.02 ± 1.39 | 57.9 ± 4.2 | 12.5 ± 3.5 | C. kingsleyae | <0.3 | 0.02 ± 0.04 | <0.3 | 2.54 ± 0.69 | 2.52 ± 0.70 | 52.4 ± 20.4 | 10.1 ± 12.7 |
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