... of heavy metal ions on soils and soil con-stituents is influenced by a variety of parameters, the mostimportant ones being pH, type and speciation of metal ioninvolved, heavy metal competition, ... 2004Available online 24 April 2004AbstractThe article focuses on adsorption of heavy metal ions on soils and soils constituents such as clay minerals, metal (hydr)oxides, and soil or-ganic ... functionalgroupsare vital for adsorption. The main parameters influencing heavy metal adsorption are soil pH, type and speciation of metal ion involved, heavy metal competition, soil composi-tion...