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Environmental fate & pathways

Adsorption / desorption

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Description of key information

Adsorption of quinoline is highly dependent on the pH due to its ionisation. At low pH, the sorption is stronger with Koc of 162 (moderately mobile) and at higher pH (7.0), it is highly mobile (Koc = 33). The adsorption, is not only due to the organic matter but is also impacted by the mineral matrix.

Key value for chemical safety assessment

Additional information

The study of Thomsen et al, 1999, has been chosen as the key study because it was performed on a soil in conditions similar to the guideline.

Some other studies are available on clays or sediments. They support the conclusion that the sorption of quinoline is dependent on its ionisation and that sorption on mineral matrices is also possible.

A soil leaching experiment is also available (5.4.4 SoilColumn Thomsen 1999), it supports the conclusion that quinoline is mobile in soil, in a pH dependent manner and is also biodegraded during this transport.