Studies on Synthetic and Natural Melanin and Its Affinity for Fe(III) Ion

<table>Plot of absorbance at 500 nm versus applied potential for (a) poly-DHI film, (b) Cu-treated poly-DHI film, (c) Fe(III)-treated poly-DHI film, and (d) Fe(II)-treated poly-DHI film.</table>

Bioinorganic Chemistry and Applications

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Figure 13

Figure 13: Studies on Synthetic and Natural Melanin and Its Affinity for Fe(III) Ion 