Ecotoxicological evaluation of magnetic ionic liquids
authors Sintra, TE; Nasirpour, M; Siopa, F; Rosatella, AA; Goncalves, F; Coutinho, JAP; Afonso, CAM; Ventura, SPM
nationality International
journal ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
author keywords Magnetic ionic liquids; Ecotoxicity; Vibrio fischeri; Risk assessment
keywords TOXICITY; FISCHERI; ECOTOXICITY; EXTRACTION; SEPARATION; CHEMISTRY; SOLVENTS; BEHAVIOR; SYSTEMS; QSAR
abstract Although magnetic ionic liquids (MILs) are not yet industrially applied, their continued development and eventual commercial use may lead to their appearance into the aquatic ecosystem through accidental spills or effluents, consequently promoting aquatic contaminations. Furthermore, the deficient information and uncertainty surrounding the environmental impact of MHz could be a major barrier to their widespread industrial application and international registration. Thus, in the present work, a range of cholinium salt derivatives with magnetic properties was synthesized and their ecotoxicity was evaluated towards the luminescent bacteria Vibrio fischeri. The results suggest that all MILs structures tested are moderately toxic, or even toxic, to the bacteria. Furthermore, their toxicity is highly dependent on the structural modifications of the cation, namely the alkyl side chain length and the number of hydroxyethyl groups, as well as the atomic number of the metal anion. Finally, from the magnetic anions evaluated, the [MnCl4](2-) is the less toxic. In order to improve the knowledge for the prospective design of environmentally safer MILs, it is important to expand this study to other aquatic organisms at different trophic levels.
publisher ACADEMIC PRESS INC ELSEVIER SCIENCE
issn 0147-6513
isbn 1090-2414
year published 2017
volume 143
beginning page 315
ending page 321
digital object identifier (doi) 10.1016/j.ecoenv.2017.05.034
web of science category Environmental Sciences; Toxicology
subject category Environmental Sciences & Ecology; Toxicology
unique article identifier WOS:000404095100040

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