Sample | Added (μg L-1) | Found (μg L-1) a | |||
---|---|---|---|---|---|
Cu(II) | Ni(II) | Cd(II) | Cr(III) | ||
Tap water | 0.00 10.00 | 1.95 ± 0.45 12.12 ± 0.12 | 5.82 ± 0.31 15.98 ± 0.35 | NDb 10.03 ± 0.07 | ND 10.12 ± 0.09 |
Canal water | 0.00 10.00 | 4.93 ± 0.15 14.87 ± 0.11 | 6.48 ± 0.36 16.32 ± 0.38 | 0.83 ± 0.09 10.68 ± 0.12 | 5.85 ± 0.38 16.17 ± 0.29 |
Sewage water | 0.00 10.00 | 6.93 ± 0.16 17.19 ± 0.12 | 69.88 ± 0.41 80.09 ± 0.37 | 4.65 ± 0.13 14.91 ± 0.21 | 52.75 ± 0.26 63.12 ± 0.32 |
River water | 0.00 10.00 | 3.64 ± 0.13 13.48 ± 0.22 | 8.92 ± 0.61 19.13 ± 0.52 | 1.67 ± 0.05 11.95 ± 0.24 | 1.32 ± 0.25 11.44 ± 0.42 |