Factor effects and mechanisms of the adsorption of Hg(II), Cd(II) and Ni(II) on charged liposomes

Negatively charged liposomes prepared by solvent evaporation method were characterized by transmission electron microscopy, Raman spectroscopy and differential scanning calorimetry. The adsorption of Ni(II), Cd(II) and Hg(II) on the liposomes was systematically investigated. Special attention was paid to the effect of pH, ionic strength and the particle size of liposomes on the adsorption behavior. The increase of pH (from 6.5 to 8.1) enhanced...