Table 1 Hg concentrations in sediment (µg/g) collected from the Ankobra and Tano River Basins
|  | Site | Hg (µg/g) | Igeo | Sediment quality |
|---|---|---|---|---|
Ankobra Basin | Asawinso | 27.76 ± 8.55 | 8.27 | Extremely contaminated |
Beppoh Ehyireso | 23.39 ± 7.05 | 8.02 | Extremely contaminated | |
Heman Prestea | 73.31 ± 55.60 | 9.67 | Extremely contaminated | |
Dominase | 66.30 ± 51.51 | 9.52 | Extremely contaminated | |
Bonsaso | 24.82 ± 9.94 | 8.11 | Extremely contaminated | |
Tano Basin | Tano Odumasi | 14.43 ± 4.47 | 7.32 | Extremely contaminated |
Jomoro | 16.18 ± 4.08 | 7.49 | Extremely contaminated | |
Elubo | 21.51 ± 0.24 | 7.90 | Extremely contaminated |