crystalline fe hydrous oxides appear more effective than amorphous fe hydrous oxides at adsorbing so 4 ( sup2- ) . high anthropic anion inputs , inability of forest soil to adsorb additional inputs and perhaps so 4 ( sup2- ) desorption appear responsible for the replacement of hco 3 ( sup- ) by so 4 ( sup2- ) in stream water .
C0030015
oxides
C0003075
anion