Adsorption of Pb(II) and Cd(II) by Squid Ommastrephes bartrami Melanin
Figure 3
IR spectrum of heavy metal enriched squid melanin as a function of the solution concentration of Cd(II) in spectral region of (a) 900–1900 ; (b) 2000–4000 . The spectra are normalized to the intensity of the 1598 peak.