WHO(2005)-PCB TEQ excl. LOQ

Sum of dioxin-like PCBs (DL-PCBs), expressed as WHO toxic equivalent (TEQ) using the WHO-TEFs(2005), calculation by using lowerbound concentrations: lowerbound concentrations are calculated on the assumption that all the values of the different congeners below the limit of quantification (LOQ) are zero.


  • Bioindicator in rivers and lakes
  • As the only viviparous fish in German nearshore waters, it is a bioindicator in nearshore coastal marine ecosystems.
  • Inshore, the herring gull mainly feeds from the sea: upon fish, mussels, and crabs.

Sampling area

Sampling period

2003 - 2023