Copper

formula: Cu; CAS Registry Number: 7440-50-8

Common metal widely used by humans

It is used in electrical and metal working industries as well as in chemical and pharmaceutical industries. Copper compounds are active ingredients in pesticides and fertilizers and added to feed to prevent Cu-deficiency in livestock.

Copper is released into the environment during weathering, leaching and biological processes but also during anthropogenic activities. As component of many proteins and enzymes copper is an essential element for all higher organisms. Nevertheless, it has toxic properties.
The bioavailability of copper, and thus its toxicity, is strongly dependent on its chemical state: soluble Cu-ions are readily available whereas bioavailability of bound copper is low.

Organisms differ in their copper tolerance and many are able to accumulate copper. In terrestrial plants Cu-deficiency is more common than toxic effects. In animals toxicity may occur e.g. through copper-rich food.

Specimen

Sampling area

Sampling period

1981 - 2024

Extended information

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