Role of soil constituents in fixation of soluble Zn, Cu, Ni and Cd added to soils Research Institute for Agriculture, Fisheries and Food
Slow immobilization of trace metals in soil, termed `fixation', affects their natural attenuation but it is still unclear which reactions occur. Twenty-eight soils were selected to assess the role of Fe oxides and carbonates on fixation of Cu, Cd, Zn and Ni. Soils included samples from 2 toposequences (Vietnam, Spain) and 13 European topsoils with different soil characteristics (pH 3.4 -7.7). Samples were amended with 250 mg Zn kg (-1), 100 mg ...