Relevant parameters for assessing the environmental impact of some pyridinium, ammonium and pyrrolidinium based ionic liquids
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- 作者：Yun Deng ; Pascale Besse-Hoggan ; Pascale Husson ; Martine Sancelme ; Anne-Marie Delort ; Piotr Stepnowski ; Monika Paszkiewicz ; Marek Go??biowski ; Margarida F. Costa Gomes
- 关键词：Aqueous solubility ; Octanol/water partition coefficient ; Relative lipophilicity ; Infinite dilution diffusion coefficient ; Ionic liquids ; Functional group
- 刊名：Chemosphere
- 出版年：2012
- 出版时间：September, 2012
- 年：2012
- 卷：89
- 期：3
- 页码：327-333
- 全文大小：487 K
文摘
Several physico-chemical properties relevant to determine the environmental impact of ionic liquids - aqueous solubility, octanol/water partition coefficient, chromatographically derived lipophilicity and infinite dilution diffusion coefficients in water - were measured in ionic liquids based on pyridinium, ammonium and pyrrolidinium cations with bis(trifluoromethylsulfonyl)imide anions. The influence of the presence of hydroxyl or ester groups in the physico-chemical properties of these liquids was checked. It appeared that the presence of functional oxygenated moieties reduces the lipophilicity of ionic liquids and so decreases the risk of bioaccumulation in environment.