Factor 3 represented by Cr, Ni and Mg describes elements
primarily affected by lithological background, but anthropogenic
influence as well. The presence of high clay content
and human activities can increase the normal content of Cr
in soil (Micó et al., 2006). The Cr mean values are not high
enough to indicate contamination, although slight increase
in Cr content occurred in PR (Dolneni), VV (Čaška) and
Radoviš (SER).