|
Sites |
Chemical Parameters |
| Hg(1)[0.1]{ND} |
Cr(50)[11.4]{5.7} |
Zn(5000)[30]{1.6} |
Cd(5)[0.017]{ND} |
Pb(10)[1.7] {ND} |
| S1 |
0.116 ± 0.002b |
ND |
ND |
ND |
49.47 ± 0.37f* |
| S2 |
0.117 ± 0.006b |
6.48 ± 0.31 |
0.219 ± 0.58b |
0.094 ± 0.003a |
6.111 ± 0.12d |
| S3 |
ND |
ND |
0.044 ± 0.12a |
ND |
9.705 ± 0.05e |
| S4 |
0.025 ± 0.0004a |
ND |
ND |
ND |
5.22 ± 0.028c |
| S5 |
ND |
ND |
ND |
ND |
4.044 ± 0.025b |
| S6 |
ND |
ND |
ND |
0.1 ± 0.00b |
0.79 ± 0.0001a |
|
| *Values with different letters showed significant differences (P<0.05, ANOVA), letter “a” indicates the smallest value for a given physico-chemical parameter. Values with*and bold indicate those above MPL in drinking water and the background concentration, respectively, ND= not detected |
| Table 2: Mean value of metal concentration ± SD in μg L-1 of lake water values in parentheses (), square brackets [] & brace {} indicate maximum permissible levels (MPL) according to international standards for drinking water1, [12,13] international average for freshwaters2 [13] background concentration of the lake water3, [1] respectively. |
