Toxicity assessment of various ionic liquid families towards Vibrio fischeri marine bacteria
authors Ventura, SPM; Marques, CS; Rosatella, AA; Afonso, CAM; Goncalves, F; Coutinho, JAP
nationality International
journal ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
author keywords Ionic liquids; Guanidinium; Imidazolium; Phosphonium; Toxicological tests; Ionic liquid features; Functionalization; Microtox (R) tests; Vibrio ficheri; EC50
keywords FUNCTIONALIZED SIDE-CHAINS; DIFFERENT HEAD GROUPS; ANTIMICROBIAL ACTIVITIES; MUTUAL SOLUBILITIES; AQUATIC TOXICITY; DAPHNIA-MAGNA; IMIDAZOLIUM; WATER; ECOTOXICITY; SOLVENTS
abstract The increasing interest on the application of ionic liquids (Is) to a wide range of processes and products has been hampered by a lack of toxicological data, mainly in what concerns novel cations, such as guanidinium, phosphonium, and functionalized and non-functionalized imidazolium-based ILs. The present study reports the toxicity of five guanidinium-, six phosphonium, and six imidazolium-based ILs, towards the luminescent marine bacteria Vibrio fischeri. These new results clearly show that guanidinium-, unlike the imidazolium- and phosphonium-based ILs, do not follow the trend of increasing toxicity with the increase in the alkyl chain length. Moreover, the introduction of oxygenated groups on the alkyl chains, such as ether and ester, leads to a decrease of the toxicity of guanidinium and also imidazolium compounds. In what respects the effect of the different cations, it is possible to recognize that the phosphonium-based ILs seem to be more toxic when compared to the analog imidazolium-based ILs (with the same anion and alkyl chains). (C) 2011 Elsevier Inc. All rights reserved.
publisher ACADEMIC PRESS INC ELSEVIER SCIENCE
issn 0147-6513
year published 2012
volume 76
beginning page 162
ending page 168
digital object identifier (doi) 10.1016/j.ecoenv.2011.10.006
web of science category Environmental Sciences; Toxicology
subject category Environmental Sciences & Ecology; Toxicology
unique article identifier WOS:000297663100019
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