Contaminants | Amount in soil | ||
Okpe | Ekore | Uduvwoku | |
Cd | 0.001 ± 0.000a | 0.201 ± 0.001c | 0.110 ± 0.000c |
Ni | 1.010 ± 0.176a | 2.077 ± 0.003b | 1.263 ± 0.176c |
Cu | 0.747 ± 0.007b | 1.050 ± 0.012a | 0.853 ± 0.012a |
Cr | 0.003 ± 0.000c | 3.307 ± 0.023a | 4.200 ± 0.025b |
Zn | 2.113 ± 0.026a | 0.907 ± 0.009b | 0.477 ± 0.012c |
| Amount in Cassava tuber | ||
| Okpe | Ekore | Uduvwoku |
Cd | BDL | 0.240 ± 0.009b | 0.140 ± 0.006b |
Ni | 1.963 ± 0.024c | 2.670 ± 0.210b | 2.230 ± 0.041a |
Cu | 1.283 ± 0.009a | 3.010 ± 0.000b | 3.023 ± 0.009c |
Cr | BDL | 1.327 ± 0.020b | 3.122 ± 0.688c |
Zn | 4.797 ± 0.026a | 6.433 ± 0.078b | 7.850 ± 0.10b |
| Amount in oil bean seed | ||
Okpe | Ekore | Uduvwoku | |
Cd | 0.093 ± 0.003a | 0.137 ± 0.003b | 0.413 ± 0.009b |
Ni | 5.593 ± 0.038a | 2.617 ± 0.018a | 2.480 ± 0.017a |
Cu | 0.083 ± 0.024c | 0.330 ± 0.252b | 3.257 ± 0.013a |
Cr | 0.056 ± 0.030b | 2.543 ± 0.033a | 3.217 ± 0.040a |
Zn | 0.243 ± 0.020a | 1.683 ± 0.030c | 2.250 ± 0.040b |