Description: The criteria for the assessment of PBT substances were developed for neutral organic substances. Many chemicals are, however, charged under environmentally relevant pH conditions. The influence of a charge in molecule on its potential to degrade in the environment is unclear and therefore the research question of this project. The results show that especially a positive charge can strongly influence the degradation of a substance in the environment. The degradation half-live of the cationic model substance was clearly slowed down in a water simulation test (OECD 309) and also in a sediment simulation test (OECD 308). First suggestions for an adaption of the method to evaluate the persistence of charged organic chemicals were made. Veröffentlicht in Texte | 78/2022.
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Tags: PBT-Stoff ? Bewertungskriterium ? Chemikalien ? Persistenz ? Sediment ? Wasser ?
License: DCAT-AP.de Sonstige geschlossene Lizenz
Language: Englisch/English
Issued: 2022-07-01
article: Fate of 14C-labelled ionic organic chemicals in a water-sediment system and surface water
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