Adsorption of Pb(II) and Cd(II) by Squid Ommastrephes bartrami Melanin

Table 1

Effect of different concentration of EDTA and HCl on desorption of Pb(II).

Desorption agents	Desorption rate (%)
	Cd(II)	Pb (II)
0.5 M HCl	99.82	99.88
0.1 M HCl	99.46	99.83
0.01 M HCl	98.62	99.48
1 mM EDTA	95.06	98.59
10 mM EDTA	98.54	99.79
40 mM EDTA	99.76	99.83