In our preliminary work, the continuous-flow leaching in RCC
using water and simulated acid rain has been applied to studies on
the mobility of trace elements in soil and sediment samples influenced by dumping of residues of the flood in the Mulde river region
(Germany) in 2002 (Schreiber et al., 2005). Dynamic and traditional
batch procedures were compared. It has been shown that the
aqueous elution under RCC conditions is much more effective for
the mobilization of heavy metals, as compared to the batch
extraction. In this work the proposed approach has been extended
to studies on the fractionation and mobility of heavy metals,
arsenic, and other elements in quite specific samples of contaminated dust collected near a large copper smelter.