Publication
Toxicity of butylone and its enantiomers to Daphnia magna and its degradation by advanced oxidation technologies
| dc.contributor.advisor | Ribeiro, Claúdia | |
| dc.contributor.advisor | Ribeiro, Ana Rita Lado | |
| dc.contributor.advisor | Amorim, Manuela | |
| dc.contributor.author | Carvalho, Ana Rita Teixeira | |
| dc.date.accessioned | 2024-01-25T09:50:00Z | |
| dc.date.available | 2024-11-24T01:30:56Z | |
| dc.date.issued | 2023-11-24 | |
| dc.description.abstract | Butylone (BTL) is a chiral synnthetic cathinone available as a racemate and reported in wastewaters. However, there are no studies on its impact on ecosystems and possible enantioselectivity. The objective of this woek was to evaluate: (i) the possible ecotoxicological effects on Daphnia magna of BTL in the form of racemate or its (R)- and (S)- enantiomers; and (ii) the efficiency of advanced oxidation tchnologies (AOT) in the removal and toxicity of BTL and its by-products in wastewaters. Enantiomers were sseparated by liquid chromatography using a chiral semi-preparative column, being obtained with high enantiomeric purity (˃97%). For toxicological studies, daphnia were exposed to concentrations of 0.1; 1 or 10 µg L-1 of the racemate or 0.1 or µg L-1 of each enatiomer. There were a significant morphophysiological, biochemical and repoductive changes depending on the formo f the substance and the development of the organism (juvenile or adult). Different AOTs (ozonation; O3; ultravioleta, UV; and UV/ O3) were apllied to wastewater spiked with BTL and acute toxicity tests (24 and 48h) demonstrated as a higher toxicity reduction of BTL-spiked effluents, with the highest reduction observed after UV and O3, respectively after 24 and 48h of exposure. | |
| dc.identifier.tid | 203469623 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.22/24664 | |
| dc.language.iso | eng | pt_PT |
| dc.subject | Emerging contaminants | pt_PT |
| dc.subject | Psychoactive substances | pt_PT |
| dc.subject | Synthetic cathinones | pt_PT |
| dc.subject | Ecotoxicity | pt_PT |
| dc.subject | Aquatic organisms | pt_PT |
| dc.subject | Wastewaters | pt_PT |
| dc.title | Toxicity of butylone and its enantiomers to Daphnia magna and its degradation by advanced oxidation technologies | pt_PT |
| dc.type | master thesis | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | masterThesis | pt_PT |
| thesis.degree.name | Análises Clínicas e Saúde Pública | pt_PT |
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