River | Pb | Zn | Cu | As | Cd | Ni | Reference | |
Iyiudene | (range) | 1.3 - 9.4 | 11.1 - 38.5 | 0.1 - 13.3 | 0.1 - 0.6 | 0.1 - 9.7 | 0.1 - 7.8 | This Study |
Mean | 4.26 | 20.08 | 4.49 | 0.15 | 2.55 | 1.445 | ||
SD | 2.25 | 7.35 | 3.62 | 0.17 | 3.07 | 2.24 | ||
Orle | 2.0 - 162.3 | 5.0 - 57.0 | 2.3 - 24.3 | 0.5 - 4.8 | <0.10 - 0.10 | 1.20 - 28.50 | | |
Imo | 9.0 - 29.0 | 31.0 - 306.0 | - | 30.02 - 22.0 | 1.0 - 1.80 | 6.0 - 28.0 | | |
Gulf of California | 17 | 88 | - | 7 | 1 | 38 | | |
UCC | 17 | 70 | 28 | 4.8 | 0.09 | 47 | | |
Average shale | 20 | 95 | 50 | 10 | 1 | 68 | | |
Surface horizons worldwide (K-P) | 27 | 70 | 38.9 | 0.67 | 0.41 | 29 | | |
Uke stream | 0.095 | 4.79 | 1.34 | - | 0.035 | - | | |
River Oyan | 5 - 31 | 45 - 360 | 15 - 31 | - | 1 - 1.8 | 25 - 42 | | |
Woji creek | 11.58 | 52.15 | 12.4 | 6.9 | 0.06 | 10.17 | | |
River Benin | 1.10 | 6.38 | 1.75 | - | - | 0.75 | | |
Ikorodu stream | 9.73 | 95.21 | 9.99 | 0.99 | 0.18 | 3.30 | | |
Lagos Lagoon | 0.12 - 0.18 | 14.23 - 21.21 | 14.88 - 20.8 | 1.27 - 2.62 | 2.95 - 6.69 | 12.68 - 19.76 | | |
Dakoto Sheha stream | 0.4 - 7.8 | 7.0 - 110 | 0.8 - 38.3 | 0.3 - 39.5 | 0.5 - 3.8 | 1.2 - 41.4 | | |
Municipal Lake | 317 - 496 | 34.6 - 872.1 | 0 - 385 | - | 1.14 - 18.3 | 12.04 - 63.49 | | |
Dakar coast | 2.83 - 1308 | 7.14 - 88.5 | 12.9 - 121 | - | 0.18 - 1.63 | 1.16 - 27.6 | | |
Koshi River | 12.9 - 36.1 | 33.3 - 93.3 | 11.2 - 43.6 | - | 0.07 - 0.59 | 10.4 - 52.6 | | |
Liaohe River | 10.57 | 50.24 | 17.82 | 9.88 | 1.20 | 17.73 | | |
Unit-mg/kg |
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