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Chemikalien

Sind Stoffe persistenter als die Testsysteme glauben lassen?

Überprüfung der Testsysteme zur Persistenzbewertung am Beispiel der Hydrolyse

Influence of particles being present in aquatic environments on the hydrolytic degradation of organic substances

Hydrolysis is an abiotic degradation process that influences the fate of many water-soluble substances in the environment. The ability of chemicals to undergo hydrolysis is currently tested in purified lab water in accordance with ⁠OECD⁠ guideline 111. It has been suggested that the addition of particles such as sediment or microplastic fibers i.e. may result in a change in the rate of hydrolysis. The project showed that adding commonly occurring particles in aquatic environments can lead to a reduced hydrolysis rate of organic substances, probably especially for sorbing cationic compounds. However, this effect is small compared to the influences known to occur for changes of pH or temperature.

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Texte | 28/2022
Seitenzahl
71
Erscheinungsjahr
Autor(en)
Friedrich Wendel, Thomas Ternes
Sprache
Englisch
Forschungskennzahl
3714 65 419 0
Verlag
German Environment Agency
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Dateigröße
3759 KB
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0,00 €
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Schlagworte:
 hydrolysis  REACH  chemicals  persistency  Degradation  micropollutants