Department of Chemical Technology, Chemical Faculty, Gdańsk University of Technology, Gdańsk, Poland.
Molecules. 2009 Nov 2;14(11):4396-405. doi: 10.3390/molecules14114396.
Ionic liquids (ILs) are known to be non-volatile and thus to have low potential for atmospheric contamination or intoxication of humans by inhalation. However ILs have the potential to contaminate soil and water as they might be water soluble and can be sorbed onto solids. The investigation of possible natural ways of reducing the concentration of ILs in the environment is of high importance, especially because the requirement for biodegradable chemicals increases, together with pressure for reduction of incineration and landfill waste. It was found that the upper concentration threshold for primary biodegradation of 1-methyl-3-octylimidazolium chloride is 0.2 mM. At higher concentrations the dehydrogenase activity of the cells dropped markedly, indicating that the IL inhibits cell activity. This concentration is in good agreement with the minimal inhibitory concentration of the same compound found for a series of bacteria and fungi by this research group. The sorption of 1-methyl-3-octylimidazolium chloride was found to be significant, and the sorption coefficient was determined to be 98.2 L kg(-1).
离子液体 (ILs) 通常为非挥发性的，因此通过吸入污染大气或使人中毒的可能性较低。然而，由于 ILs 可能具有水溶性，并可被固体吸附，因此有可能污染土壤和水。研究减少 ILs 在环境中的浓度的自然方法非常重要，特别是因为对可生物降解化学品的需求增加，同时也需要减少焚烧和垃圾填埋废物。研究发现，1-甲基-3-辛基咪唑氯化物的初步生物降解的上限浓度为 0.2mM。在更高的浓度下，细胞的脱氢酶活性明显下降，表明 IL 抑制了细胞活性。这一浓度与该研究小组为一系列细菌和真菌发现的同一种化合物的最小抑菌浓度非常吻合。研究发现，1-甲基-3-辛基咪唑氯化物的吸附作用显著，其吸附系数为 98.2Lkg(-1)。
