Table 8 Concentration of heavy metal in surface water samples of river (n = 10).
S/N | Code | Group | Pb | Zn | Fe (mg/l} | Cd | Cr |
|---|---|---|---|---|---|---|---|
1 | UMJ-1 | Wet Season | 0.01 | 0.01 | 0.00 | 0.00 | 0.00 |
2 | UMT-1 | 0.00 | 0.07 | 0.02 | 0.00 | 0.01 | |
3 | NNB-1 | 0.00 | 0.28 | 0.00 | 0.00 | 0.00 | |
4 | OBK-1 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | |
5 | ABK-1 | 0.00 | 0.08 | 0.00 | 0.00 | 0.00 | |
6 | UMJ-2 | Dry Season | 0.00 | 0.01 | 0.02 | 0.04 | 0.01 |
7 | UMT-2 | 0.03 | 0.03 | 0.23 | 0.00 | 0.00 | |
8 | NNB-2 | 0.01 | 0.01 | 0.11 | 0.00 | 0.01 | |
9 | OBK-2 | 0.05 | 0.00 | 0.32 | 0.02 | 0.00 | |
10 | ABK-2 | 0.10 | 0.00 | 0.28 | 0.01 | 0.01 | |
Min | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | ||
Max | 0.10 | 0.28 | 0.32 | 0.04 | 0.01 | ||
Mean | 0.02 | 0.05 | 0.10 | 0.01 | 0.01 | ||
Standard Deviation | 0.03 | 0.09 | 0.13 | 0.01 | 0.01 | ||
WHO STDS | 0.01 | 3–5 | 0.3 | 0.003 | 0.05 | ||
