Publikation:
Fate of 14C-labelled ionic organic chemicals in a water-sediment system and surface water

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dc.contributor.authorHolzmann, Hannah
dc.contributor.authorAckermann, Juliane
dc.contributor.authorClaßen, Daniela
dc.date.accessioned2024-06-16T13:14:22Z
dc.date.available2024-06-16T13:14:22Z
dc.date.issued2022
dc.description.abstractThe persistence assessment of organic chemicals is based on neutral reference substances. Therefore, our study aimed at investigating the influence of a chemical charge on the degradation of organic compounds in a water-sediment system (OECD 308) and surface water (OECD 309). We used radiolabelled 4-n-dodecylbenzenesulfonic acid sodium salt (14C-DS-, anionic), 4-n-dodecylbenzyltrimethylammonium chloride (14C-DA+, cationic) and 4-n-dodecylphenol (14C-DP, non-ionic) which are structurally similar except their charges. After 120 days of incubation in a water-sediment system, 68% (14C-DS-), 6% (14C-DA+) and 63% (14C-DP) of the applied radioactivity (AR) were mineralized. The formation of non-extractable residues (NER) after 120 days was highest for 14C-DA+ (33% AR), followed by 14C-DS- (19% AR) and 14C-DP (14% AR). Dissipation half-lives (DT50) at 12 ˚C decreased as follows: 14C-DA+ (346 days) >> 14C-DS- (47 days) > 14C-DP (30 days). After 60 days of incubation in surface water with suspended sediment, mineralization of 14C-DS-, 14C-DA+ and 14C-DP accounted for 63%, 7% and 58% AR, respectively. Highest NER formation was observed for 14C-DP (21% AR), followed by 14C-DA+ (14% AR) and 14C-DS- (9% AR). DT50 (12 ˚C) decreased as follows: 14C-DA+ (45 days) > 14C-DP (3 days) > 14C-DS- (2 days). We showed that a positive charge reduces the degradability of organic chemicals in both test systems. From a scientific point of view, simulation studies following OECD 309 should always be complimented by tests with high sorption capacity, e.g. OECD 308 and OECD 307 tests in order to assess the degradation of a compound, especially in case of cationic organic compounds. © 2022 The Authorsen
dc.format.extent1 Onlineresource (9 pages)
dc.format.mediumonline resource
dc.identifier.doihttps://doi.org/10.60810/openumwelt-737
dc.identifier.urihttps://openumwelt.de/handle/123456789/2716
dc.language.isoeng
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectPersistenz
dc.subjectHalbwertszeit
dc.titleFate of 14C-labelled ionic organic chemicals in a water-sediment system and surface water
dc.typeWissenschaftlicher Artikel
dc.type.dcmitext
dc.type.mediumcomputer
dspace.entity.typePublication
local.bibliographicCitation.journalTitleChemosphere
local.bibliographicCitation.originalDOI10.1016/j.chemosphere.2022.134885
local.bibliographicCitation.volume303 (2022), Heft Part
local.collectionAufsätze
local.contributor.authorId02190063
local.identifier.catalogId02491779
local.ingest.leader05778naa a2200000uu 4500
local.jointTitleFATE OF 14CLABELLED IONIC ORGANIC CHEMICALS IN A WATERSEDIMENT SYSTEM AND SURFACE WATER
local.reviewtrue
local.sourcecatalog
local.source.urihttp://creativecommons.org/licenses/by-nc/4.0/deed.de
local.staffPublicationtrue
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relation.isAuthorOfPublication37eefbcf-d144-4f1f-9d37-bc3900d4f328
relation.isAuthorOfPublication.latestForDiscoveryef374b8e-4f46-4a12-8b07-a66c5ad5db19
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