Table 1 The effect of foreign ions on pre-concentration and determination of Au(III) (20 μg L−1)
Ions | Ion/Au ratio | Extraction recovery (%) |
|---|---|---|
Cr | 500 | 96 ± 6 |
Co | 100 | 96 ± 6 |
Cd | 500 | 96 ± 6 |
Ni | 500 | 96 ± 6 |
Mn | 500 | 104 ± 6 |
Pb | 500 | 95 ± 6 |
Sc | 100 | 96 ± 6 |
Zn | 500 | 96 ± 6 |
Ba | 100 | 96 ± 6 |
Mg | 1000 | 95 ± 6 |
Al | 2000 | 101 ± 6 |
Ca | 2000 | 96 ± 6 |
Na | 2000 | 95 ± 6 |
Fe | 2000 | 101 ± 6 |
K | 1000 | 98 ± 6 |
Pd | 500 | 107 ± 6 |
Pt | 500 | 107 ± 6 |
Ir | 100 | 105 ± 6 |