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Related Concept Videos

Transport Number01:31

Transport Number

The transport number is the fraction of the total current carried by an ion in an electrolyte solution. It is defined as the ratio of the current carried by a specific ion to the total current flowing through the solution. The transport number, t, is central to understanding ionic mobility, which describes how fast an ion moves under the influence of an electric field. This link connects the physical behavior of ions in solution to the chemical processes that occur during electrochemical...
Theory of Strong Electrolytes01:23

Theory of Strong Electrolytes

The interionic forces of the strong electrolytes depend on the solvent's dielectric constant, which is the ability of a solvent to store electrical energy, based on its polarizability. and the solution's concentration. In high-dielectric solvents and in dilute solutions, weak electrostatic forces keep ions apart. However, in low-dielectric solvents or concentrated solutions, stronger interionic forces may cause ions to pair up as ionic doublets despite being fully ionized. The theory of strong...
Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

Ion-exchange chromatography, or IEC, is a technique for separating ions based on their affinity for the stationary phase. The stationary phase is a cross-linked polymer resin with covalently attached ionic functional groups. The functional groups can be either positively charged (cation exchangers) or negatively charged (anion exchangers). A cation exchanger consists of a polymeric anion and active cations, while an anion exchanger is a polymeric cation with active anions. The choice of...
Ionic Strength: Effects on Chemical Equilibria01:19

Ionic Strength: Effects on Chemical Equilibria

The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary cation—the calcium...
Ionic Association01:28

Ionic Association

The ionic association is the association of oppositely charged ions in an electrolyte solution to form ion pairs. Bjerrum defined ion pairs as two oppositely charged ions whose electrostatic attraction exceeds the thermal energy of the system, typically expressed as 2kT. Electrostatic attraction depends on ionic charge, separation distance, and the dielectric constant of the medium. Thermal energy, represented by kT, reflects the tendency of ions to move independently due to molecular motion.

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Updated: Jun 23, 2026

Development, Characterization, and Evaluation of CAGE-based Ionic Liquid Systems for Transdermal Delivery
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Development, Characterization, and Evaluation of CAGE-based Ionic Liquid Systems for Transdermal Delivery

Published on: September 26, 2025

Study of ionic liquid cations transport in soil.

Sylwia Studzińska1, Tomasz Kowalkowski, Bogusław Buszewski

  • 1Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University, PL-87-100 Toruń, Poland.

Journal of Hazardous Materials
|April 18, 2009
PubMed
Summary

Soils with higher organic carbon content effectively immobilize ionic liquid cations, reducing their migration. This study investigated the transport of imidazolium ionic liquids in various soils, finding total organic carbon (TOC) is key to their retention.

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Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation
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Integrated Field Lysimetry and Porewater Sampling for Evaluation of Chemical Mobility in Soils and Established Vegetation

Published on: July 4, 2014

Area of Science:

  • Environmental Chemistry
  • Soil Science
  • Green Chemistry

Background:

  • Ionic liquids (ILs) are molten salts with industrial applications.
  • Potential release of ILs into the environment poses contamination risks.
  • Understanding IL cation transport in soils is crucial for environmental risk assessment.

Purpose of the Study:

  • To investigate the transport and immobilization of imidazolium ionic liquids in soils.
  • To determine the influence of soil properties, particularly total organic carbon (TOC), on IL cation behavior.
  • To model the retardation of IL cations based on soil and IL properties.

Main Methods:

  • Column leaching experiments using five soil types with varying TOC content.
  • Study of three imidazolium ionic liquid chlorides: 1-ethyl-3-methylimidazolium (EMIM), 1-n-butyl-3-methylimidazolium (BMIM), and 1-n-hexyl-3-methylimidazolium (HMIM).
  • Factorial regression analysis to model cation retardation.

Main Results:

  • Soils with higher TOC content demonstrated a significant ability to immobilize IL cations.
  • Increased TOC directly correlated with reduced solute migration through the soil profile.
  • Factorial regression successfully related soil and IL cation properties to cation retardation.

Conclusions:

  • Total organic carbon (TOC) is a critical factor controlling the environmental fate of imidazolium ionic liquids in soils.
  • Higher soil organic matter content enhances IL cation retention, mitigating potential contamination.
  • The developed regression model provides a tool for predicting IL cation transport in diverse soil environments.