Some authors (Alloway, 1999; Kabata Pendias, 2011) stated
that the main factor of heavy metal migration is dissolved
organic matter DOM. Here, OM indicated positive correlations
with the most of the elements extracted by aqua regia,
except for V and Mg. That was not case with total element
content, where strong correlations between OM was detected
only for Ba, Li, Ni and total P.