Acute toxicity and biodegradability of N-alkyl-N-methylmorpholinium and N-alkyl-DABCO based ionic liquids

作者：Pretti Carlo^*; Renzi Monia; Focardi Silvano Ettore; Giovani Andrea; Monni Gianfranca; Melai Bernardo; Rajamani Sunita; Chiappe Cinzia

来源：Ecotoxicology and Environmental Safety, 2011, 74(4): 748-753.

DOI：10.1016/j.ecoenv.2010.10.032

• Ionic liquids
• Morpholinium
• DABCO
• Ecotoxicology
• Vibrio fischeri
• Biodegradability

N-Alkyl-N-methylmorpholinium and N-alkyl substituted 1,4-diazabicyclo[2.2.2]octane (DABCO) based ionic liquids (ILs), N-alkyl-DABCO, bearing short alkyl chains are characterised by a low toxicity to Vibrio fischeri, although toxicity significantly increases on increasing the alkyl chain length. Alkyl chain length affects also biodegradability in the 28 days tests; the higher level of biodegradation was found in both the series in the case of the ethyl (C2) derivatives. In the case of N-ethyl DABCO based IL, although biodegradability is still around 40%, and consequently this IL cannot be classified as "readily biodegradable", this value is similar to the more biodegradable functionalized imidazolium based ILs.

• 出版日期2011-5