Fig. 7. Amounts of Cd, Zn, Pb, and Cu extracted in column leaching experiments, single batch extraction with 1 M CaCl₂ solution at a solution to soil ratio (SSR) = 100 mL/g, and sequential batch extractions. All results are given in percent of the respective total metal concentrations (Table 1). The arrows on top of bars for column experiments indicate that the respective pools were not depleted at the end of the leaching period.

Return to article