Table 5 Recovery results of heavy metal ions in wastewater samples
Metallic ion | Wastewater (Copper factory, Sarcheshmeh, Rafsanjan) | Waste water (sewage treatment plant, Yazd) | ||||
|---|---|---|---|---|---|---|
Added | Found | Recovery (%) | Added | Found | Recovery (%) | |
Pb(II) (μg mL−1)a | 0 | 2.20 (±0.14) | – | 0 | 0.46 (±0.10) | – |
5.0 | 7.11 (±0.21) | 98.2 | 5.0 | 5.24 (±0.16) | 95.6 | |
10.0 | 12.24 (±0.17) | 100.4 | 10.0 | 10.31 (±0.08) | 98.5 | |
Ni(II) (μg mL−1)a | 0 | 1.10 (±0.11) | – | 0 | 0.29 (±0.10) | – |
5.0 | 6.12 (±0.15) | 100.4 | 5.0 | 5.37 (±0.12) | 101.6 | |
10.0 | 11.08 (±0.12) | 99.8 | 10.0 | 10.36 (±0.14) | 100.7 | |
Cd(II) (μg mL−1)a | 0 | 0.50 (±0.09) | – | 0 | 0.42 (±0.13) | – |
5.0 | 5.44 (±0.14) | 98.8 | 5.0 | 5.41 (±0.16) | 99.8 | |
10.0 | 10.52 (±0.19) | 100.2 | 10.0 | 10.47 (±0.11) | 100.5 | |
Cu(II) (μg mL−1)a | 0 | 6.21 (±0.13) | – | 0 | 0.59 (0.10) | – |
5.0 | 11.13 (±0.15) | 98.4 | 5.0 | 5.52 (±0.17) | 98.6 | |
10.0 | 16.10 (±0.18) | 98.9 | 10.0 | 10.64 (±0.15) | 100.5 | |
Cr(III) (μg mL−1)a | 0 | 0.57 (±0.10) | – | 0 | 0.56 (±0.17) | – |
5.0 | 5.60 (±0.15) | 100.6 | 5.0 | 5.50 (±0.18) | 98.8 | |
10.0 | 10.47 (±0.15) | 99.0 | 10.0 | 10.60 (±0.13) | 100.4 | |