Study of toxicity of imidazolium ionic liquids to watercress (<Emphasis Type="Italic">Lepidium sativum</Emphasis> L.) |
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Authors: | Sylwia Studzińska Bogus?aw Buszewski |
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Institution: | (1) Chair of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, 7 Gagarin Str., 87-100 Toruń, Poland |
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Abstract: | The sensitivity of Lepidium sativum L. germination to three imidazolium ionic liquids was investigated in solutions and soils artificially contaminated with
mixtures of those compounds. In case of aquatic solutions, the toxic character of analyzed compounds is connected with their
hydrophobicity. The seedling growth is increasing with the decrease in ionic liquid hydrophobicity. The novelty of those studies
is the application of high-performance liquid chromatography, which was used for the determination of ionic liquid quantity
absorbed by cress. There was almost linear relationship between decrease in root germination and amount of ionic liquid uptaken
by cress. Furthermore, the systematic studies on the influence of total organic carbon content in soil on the toxicity of
ionic liquids to cress were performed for the first time. Hazardous effects appeared to be closely connected with organic
matter: with the decrease of total organic carbon quantity, the inhibition of plant growth was more significant. Visual effects
of ionic liquid toxic activity to garden cress are similar as in the case of nutrient deficit in plants.
Figure Visual phytotoxicity effects observed during the test; leaf chromatosis: light green and yellow (up photos), violet (lower
photos) |
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Keywords: | Imidazolium ionic liquids Lepidium sativum L Toxicity tests Hydrophobicity Organic matter in soil High-performance liquid chromatography |
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