Table 3. Values of Binding Constants Calculated from the Benesi–Hildebrand Plot.
| metal | Cu2+ | Fe2+ | Fe3+ |
|---|---|---|---|
| Ka for SS1 | 0.451 × 104 M–1 | 0.58 × 104 M–1 | 1.17 × 104 M–1 |
| Ka for SS2 | 0.216 × 104 M–1 | 0.61 × 104 M–1 | 0.92 × 104 M–1 |
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