WHO(2005)-PCB TEQ incl. LOQ

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


  • 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 - 2022