Table 3a: The mean percentage proportion of metals (%) in the non-lithogenous and lithogenous fractions.
| Locations | Cd | Cu | Pb | Zn | ||||
|---|---|---|---|---|---|---|---|---|
| Non-lithogenous fractiona | Lithogenous fractionb | Non-lithogenous fractiona | Lithogenous fractionb | Non-lithogenous fractiona | Lithogenous fractionb | Non-lithogenous fractiona | Lithogenous fractionb | |
| Odo Owa 2 | 78.95 | 21.05 | 44.44 | 55.56 | 73.08 | 26.92 | 93.33 | 6.67 |
| Odo Owa 5 | 74.07 | 25.93 | 37.5 | 62.5 | 80 | 20 | 86.36 | 13.64 |
| Oke-Asa 1 | 67.86 | 32.14 | 66.67 | 33.33 | 82.35 | 17.65 | 90.48 | 9.52 |
| Ijero/Ipoti | 75 | 25 | 66.67 | 33.33 | 80 | 20 | 94.44 | 5.56 |
| Ipoti 3 | 62.96 | 37.04 | 29.63 | 70.37 | 90.32 | 9.68 | 89.47 | 10.53 |
| Soso | 72.73 | 27.27 | 70 | 30 | 76.19 | 23.81 | 90 | 10 |
| Lawrence 1 | 90 | 10 | 46.67 | 53.33 | 71.43 | 28.57 | 86.96 | 13.04 |
| Lawrence 2 | 53.85 | 46.15 | 50 | 50 | 73.68 | 26.32 | 86.96 | 13.04 |
| Erigbe | 46.67 | 53.33 | 41.67 | 58.33 | 85 | 15 | 92.59 | 7.41 |
| Arapate | 64 | 36 | 37.5 | 62.5 | 80 | 20 | 86.96 | 13.04 |
| Mean | 68.61 | 31.39 | 49.07 | 50.93 | 79.21 | 20.79 | 89.76 | 10.24 |
| St dev. | 12.5 | 12.5 | 14.1 | 14.1 | 5.8 | 5.8 | 3 | 3 |
Non-lithogenous fractiona = aqueous phase + exchangeable phase + inorganic phase + organic phase; Lithogenous fractionb = Residual.