formula: C12H8Cl6O; CAS Registry Number: 60-57-1
Structure of dieldrin
Source: Wikipedia

Very effective insecticide that was widely used as contact and stomach poison for soil insects like termites, grasshoppers and beetles and for textile pests until the early 1970s

Furthermore, it was used in the control of tropical vectors like the tsetse fly.

Dieldrin is the main metabolite and active ingredient of Aldrin.

It is virtually insoluble in water. In soil it adheres to particles and may enter surface waters during run-off incidences. Adsorbed to dust particles, dieldrin can be transported over long distances in the atmosphere.

The compound is toxic to animals and humans. Moreover, there is evidence for carcinogenicity and endocrine disrupting activity.
In the environment, dieldrin is very persistent. It is accumulated by plants and animals and enriches in the food web (biomagnification).

When the Stockholm Convention entered into force in 2004, the use of dieldrin was restricted to agricultural applications.

In the Federal Republic of Germany, dieldrin is banned since 1971.


Herring gull Inshore, the herring gull mainly feeds from the sea: upon fish, mussels, and crabs.
Roe deer, one-year-old The roe deer is the most common of the larger herbivores (first order-consumer) to be found in the wild in Europe.

Sampling area

BR/NP Berchtesgaden The only high mountains national park in Germany and an area of the Limestone Alps with international relevance
Saarländischer Verdichtungsraum Important, old-industrialised conurbation in Germany.
Bornhöveder Seengebiet Main water divide between the North- and Baltic Sea
NP Bayerischer Wald Germany's first national park
NP Vorpommersche Boddenlandschaft National Park in the largest brackish water (Bodden) habitat of the world.
BR/NP Wattenmeere National park in the world largest connected sand and mud flats.
Verdichtungsraum Halle-Leipzig Region in the chemical triangle of Central Germany
NP Harz Germany's largest forest national park
Solling Second highest and largest low mountain range in Northern Germany
BR Pfälzerwald Germany's largest connected forest area in a range of low mountains
Oberbayerisches Tertiärhügelland The Upper Bavarian Tertiary Uplands are a part of the Southern German Molasse Basin

Sampling period

1988 - 2019