Initial Solution (mL) | Hydroxylammonium Chloride 10% (mL) | Sodium Acetate 2M (mL) | Ortho-Phenanthroline 0.25% (mL) | Final Concentration [Fe2+] (mole∙L−1) |
1 | 10 | 1 | 8 | 4 × 10−7 |
2 | 10 | 2 | 8 | 8 × 10−7 |
3 | 10 | 3 | 8 | 1.2 × 10−6 |
4 | 10 | 4 | 8 | 1.6 × 10−6 |
5 | 10 | 5 | 8 | 2 × 10−6 |
6 | 10 | 6 | 8 | 2.4 × 10−6 |
7 | 10 | 7 | 8 | 2.8 × 10−6 |