ABSTRACT
Mobilization of nickel in an acidified, non-calcareous, sandy aquifer was studied through integrated field, laboratory and modeling studies. Apparently, the majority of the solid phase bound nickel is associated with silicate minerals. This nickel pool is probably released to the aqueous phase by dissolution/weathering of the silicate minerals. However, a minor part of the solid phase associated nickel is released to the groundwater by desorption at the acidification front.
