| Site |
Cu |
Zn |
Pb |
Cd |
Co |
Ni |
Mn |
Fe |
Cr |
| Site1 |
0.015±0.005 |
0.21±0.09 |
0.01±0 |
0.01±0 |
0.02±0.008 |
BLD |
0.15±0.06 |
1.36±1.18 |
BLD |
| Site 2 |
0.015±0.005 |
0.33±0.07 |
0.01±0 |
0.02±0.005 |
0.03±0.02 |
BLD |
0.15±0.006 |
1.10±0.82 |
BLD |
| Site3 |
0.016±0.005 |
0.5±0.006 |
0.05±0.006 |
0.01±0 |
0.02±0.01 |
BLD |
0.10±0.04 |
0.30±0.04 |
BLD |
| Site4 |
0.018±0.004 |
0.33±0.22 |
0.06±0.05 |
0.01±0.004 |
0.03±0.02 |
BLD |
0.13±0.04 |
5.18±3.20 |
BLD |
| Guideline value for drinking water (WHO)a |
2.0 |
3.0 |
0.01 |
0.003 |
- |
0.07 |
0.40 |
- |
0.05 |
| Guideline value for irrigation water (FAO)b |
0.20 |
2.0 |
5.0 |
0.01 |
0.05 |
0.20 |
0.20 |
5.0 |
0.10 |
|
| aSource: WHO, 2008; bSource: FAO, 2011; BLD is below detection limit of the method [13,25] |
| Table 3: Trace metal concentrations (Mean ± SD) in water samples (in mg/L). |
