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Environmental fate & pathways

Adsorption / desorption

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Description of key information

High adsorption potential

Key value for chemical safety assessment

Additional information

Summary according the adsorption/desorption potential of copper and copper compounds, as given in EHC 200 (WHO 1998)

Most copper deposited in soil is strongly adsorbed and remains in the upper few centimetres of soil. It is especially bound to the organic matter, as well as being adsorbed by carbonate minerals and hydrous iron and manganese oxides. Copper binds more strongly than most other metals and is less influenced by pH as a result. The greatest amount of leaching of copper occurs from sandy soils, compared with clays and peats, whereas acidic conditions favour copper leaching to the groundwater from the soil.

From EU-risk assessment, 2008

Kd = 2120 L kg-1, log kd = 3,68