Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China; School of Resource and Environmental Science, Wuhan University, Wuhan, 430072, PR China.
Institute of Environmental and Analytical Sciences, Henan Joint International Research Laboratory of Environmental Pollution Control Materials, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, PR China.
Chemosphere. 2018 Apr;196:331-338. doi: 10.1016/j.chemosphere.2017.12.148. Epub 2017 Dec 28.
The toxic effects of eight common ionic liquids (ILs) on wheat seedlings was evaluated with specific emphasis on the influence of concentration range, anion species and cation chain length of ILs. The growth of wheat seeds was significantly inhibited by ILs, especially under higher concentration, presence of the fluoride anion and the longer alkyl chain length of the cation. The modified biochar (PB-K-N) efficiently removed the ILs from aqueous solutions, the order of the adsorption capacities was as follows: [Bmim]OAc [Bmim]CHO [Bmim]BF [Bmim]Br, [Domim]Br [BPy]Br [Omim]Br [Bmim]Br [Emim]Br. Furthermore, the wheat growth of all ILs groups except [Bmim]BF group in the presence of PB-K-N was also similar to that of the control groups, which clearly demonstrated that PB-K-N could decrease or alleviate toxicity of ILs toward wheat by adsorption effect. Therefore, the biochar application was effective in improving plant resistance to ILs stress by adsorption, to reduce the phytotoxicity of ILs and provide an alternative approach for the utilization of PB-K-N in ILs contaminated water and soils.
采用特定的浓度范围、阴离子种类和阳离子链长的方法，评估了八种常见离子液体（ILs）对小麦幼苗的毒性作用。ILs 显著抑制了小麦种子的生长，尤其是在较高浓度、氟阴离子存在和阳离子烷基链较长的情况下。改性生物炭（PB-K-N）可有效地从水溶液中去除 ILs，吸附容量的顺序如下：[Bmim]OAc [Bmim]CHO [Bmim]BF [Bmim]Br、[Domim]Br [BPy]Br [Omim]Br [Bmim]Br [Emim]Br。此外，除了 [Bmim]BF 组之外，在 PB-K-N 存在的情况下，所有 ILs 组的小麦生长情况与对照组相似，这清楚地表明 PB-K-N 可以通过吸附作用降低或减轻 ILs 对小麦的毒性。因此，生物炭的应用可通过吸附作用有效提高植物对 ILs 胁迫的抗性，降低 ILs 的植物毒性，并为 PB-K-N 在 ILs 污染水和土壤中的利用提供了一种替代方法。
