Tobacco Research Institute of Chinese Academy of Agricultural Sciences (CAAS), Qingdao 266101, PR China.
College of Resources and Environment, Key Laboratory of Agricultural Environment in Universities of Shandong, Shandong Agricultural University, Taian 271018, PR China.
Ecotoxicol Environ Saf. 2018 May 15;152:114-120. doi: 10.1016/j.ecoenv.2018.01.041. Epub 2018 Feb 4.
Imidazolium-based ionic liquids (ILs) have attracted increasing attention in recent years. The IL 1-dodecyl-3-methylimidazolium chloride ([Cmim]Cl) has been widely used in the chemical industry. In this study, the influence of [Cmim]Cl on Vicia faba seedlings, soil physicochemical properties and soil enzyme activities was investigated for the first time. Meanwhile, the variation of [Cmim]Cl concentrations in soil was monitored during the exposure period. The present results showed that the concentration of [Cmim]Cl remained stable in the tested soil with a change rate of no more than 10% during the exposure period. The 50% effective concentration (EC) values for shoot length, root length and dry weight were 188, 69 and 132 mg kg, respectively. At 200 mg kg and 400 mg kg, [Cmim]Cl had significant influence on soil organic matter content, pH value and conductivity value. At 40 mg kg, the reactive oxygen species (ROS) levels were obviously enhanced, resulting in oxidative stress effects in Vicia faba seedling leaves. Additionally, the soil enzyme activities changed significantly at 40 mg kg.
近年来，基于咪唑的离子液体（ILs）受到了越来越多的关注。1-十二烷基-3-甲基咪唑氯盐（[Cmim]Cl）已在化学工业中得到广泛应用。本研究首次考察了[Cmim]Cl 对蚕豆幼苗、土壤理化性质和土壤酶活性的影响。同时，在暴露期间监测了[Cmim]Cl 在土壤中的变化浓度。目前的结果表明，在测试土壤中，[Cmim]Cl 的浓度在暴露期间保持稳定，变化率不超过 10%。对芽长、根长和干重的 50%有效浓度（EC）值分别为 188、69 和 132mgkg。在 200mgkg 和 400mgkg 时，[Cmim]Cl 对土壤有机质含量、pH 值和电导率值有显著影响。在 40mgkg 时，活性氧（ROS）水平明显升高，导致蚕豆幼苗叶片产生氧化应激效应。此外，土壤酶活性在 40mgkg 时也发生了显著变化。
