大型水蚤
生态毒性
对映体
流出物
环境化学
毒性
化学
急性毒性
生物测定
水蚤
废水
色谱法
水蚤
生物
有机化学
废物管理
生态学
甲壳动物
工程类
作者
Ana Rita Carvalho,A. Morão,Virgínia M. F. Gonçalves,Maria Elizabeth Tiritan,Ana M. Gorito,M. Fernando R. Pereira,Adrián M.T. Silva,Bruno B. Castro,João Carrola,Manuela Amorim,Ana R. Ribeiro,Cláudia Ribeiro
标识
DOI:10.1016/j.aquatox.2024.106906
摘要
Butylone (BTL) is a chiral synthetic cathinone available as a racemate and reported as contaminant in wastewater effluents. However, there are no studies on its impact on ecosystems and possible enantioselectivity in ecotoxicity. This work aimed to evaluate: (i) the possible ecotoxicity of BTL as racemate or its isolated (R)- and (S)- enantiomers using Daphnia magna; and (ii) the efficiency of advanced oxidation technologies (AOTs) in the removal of BTL and reduction of toxic effects caused by wastewaters. Enantiomers of BTL were obtained by liquid chromatography (LC) using a chiral semi-preparative column. Enantiomeric purity for each enantiomer was > 97 %. For toxicity assessment, a 9-day sub-chronic assay was performed with the racemate (at 0.10, 1.0 or 10 μg L−1) or each enantiomer (at 0.10 or 1.0 μg L−1). Changes in morphophysiological, behavioural, biochemical and reproductive endpoints were observed, which were dependent on the form of the substance and life stage of the organism (juvenile or adult). Removal rates of BTL in spiked wastewater (10 μg L−1) treated with different AOTs (ultraviolet, UV; ozonation, O3; and UV/O3) were similar and lower than 29 %. The 48 h D. magna acute toxicity assays demonstrated a reduction in the toxicity of the treated spiked effluents, but no differences were found among AOTs treatments. These results warn of the contamination and negative impact of BTL on ecosystems and highlight the need for efficient removal processes.
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