Eluent | Recovery% (N = 5)a | ||||
---|---|---|---|---|---|
Type | Concentration (mol L-1) | Cu(II) | Ni(II) | Cd(II) | Cr(III) |
HCl | 1.0 | 22 ± 2 | 33 ± 2 | 29 ± 2 | 15 ± 2 |
2.0 | 25 ± 1 | 70 ± 1 | 42 ± 1 | 29 ± 1 | |
4.0 | 90 ± 3 | 92 ± 2 | 85 ± 2 | 31 ± 2 | |
H2SO4 | 1.0 | 19 ± 1 | 25 ± 2 | 34 ± 1 | 32 ± 1 |
2.0 | 26 ± 3 | 32 ± 2 | 40 ± 1 | 36 ± 3 | |
4.0 | 54 ± 2 | 47 ± 1 | 51 ± 2 | 43 ± 2 | |
HNO3 | 1.0 | 98 ± 1 | 97 ± 1 | 99 ± 1 | 98 ± 1 |
2.0 | 98 ± 1 | 97 ± 1 | 99 ± 1 | 97 ± 1 | |
4.0 | 96 ± 2 | 97 ± 2 | 98 ± 2 | 98 ± 2 | |
1.0 | 36 ± 2 | 28 ± 2 | 20 ± 2 | 24 ± 2 | |
HClO4 | 2.0 | 41 ± 1 | 28 ± 2 | 26 ± 1 | 26 ± 2 |
3.0 | 45 ± 2 | 28 ± 1 | 35 ± 2 | 26 ± 2 | |
CH3COOH | 1.0 | 9 ± 3 | 18 ± 2 | 9 ± 3 | 8 ± 2 |
2.0 | 12 ± 2 | 19 ± 2 | 11 ± 2 | 14 ± 2 | |
4.0 | 13 ± 2 | 18 ± 1 | 12 ± 2 | 16 ± 2 |