Studies on Synthetic and Natural Melanin and Its Affinity for Fe(III) Ion
Figure 6
Interaction distribution curves of a natural melanin solution containing 0.00994 mmol of Fe(III) ions and 0.0370 mmol of melanin (40 mg of natural melanin) at 25.0°C., where (a) = Fe(Ac)2+, (b) = Fe(Qi)2+, (c) = Fe(OH)(Cat), (d) = Fe(OH)(Cat)(Qi)−, (e) = Fe(OH)2(Cat)(Qi)2−, and (f) = Fe(OH)2(Cat)23−.
