At present, the situation regarding data on concentration patterns in
soils of areas with background contaminations are insufficient. For so
il protection these data are essential for deriving reference values.
Therefore the article presents and interprets detection and determinat
ion limits for a selection of priority organic pollutants in soils. Ba
sed on these results determination limits for the determination of bac
kground values for larger areas are proposed. Background values for or
ganic contaminants in not specifically polluted soils and groundwaters
may be very low with extreme demands on chemical analysis. In case of
sampling from larger areas therefore a compromise has to be found bet
ween what is possible with great technical effort and what is requeste
d and desirable for soil and groundwater protection.