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Related Concept Videos

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...
Chemical Ionization (CI) Mass Spectrometry01:21

Chemical Ionization (CI) Mass Spectrometry

The molecular ion peak of a molecule in the mass spectrum provides vital information for molecular identification. However, conventional electron impact ionization can lead to the rapid dissociation of some molecular ions before they reach the detector. A milder ionization method is required to increase the lifetime of such ionized analyte molecules. Chemical ionization (CI) is a gas-phase protonation reaction useful for mass-analyzing analyte molecules that are easily protonated to yield the...
High-Performance Liquid Chromatography: Instrumentation00:57

High-Performance Liquid Chromatography: Instrumentation

High-performance liquid chromatography, or HPLC, is an analytical technique that separates liquid samples under high pressures. An HPLC instrument consists of glass bottles for storing solvents called mobile phase reservoirs. HPLC-grade solvents are used to maintain high purity, and the dissolved gases are removed using a degasser, such as a vacuum pumping system or sparging with helium. The solvents are then pumped into the analytical column using a screw-driven syringe or reciprocating pumps.
High-Performance Liquid Chromatography: Introduction01:11

High-Performance Liquid Chromatography: Introduction

High-performance liquid chromatography(HPLC), formerly referred to as High-pressure liquid chromatography, is a powerful technique used to separate, identify, and quantify components in complex mixtures. The term "high pressure" refers to using high pressure to push the liquid mobile phase through the tightly packed columns.
In HPLC, two phases play a critical role in the separation process:
Titration in Nonaqueous Solvents01:16

Titration in Nonaqueous Solvents

Most acid-base titrations are performed in an aqueous medium. In aqueous titrations, water competes with weaker acids or bases for proton donation or acceptance, leading to ambiguous endpoints in the titration curve. Water also affects the partial ionization of weak acids or bases. For example, water accepts a proton from acetic acid to form hydronium and acetate ions. The hydronium ion formed is a stronger acid than acetic acid, and the acetate ion is a stronger base than water. As a result,...
High-Performance Liquid Chromatography: Elution Process01:05

High-Performance Liquid Chromatography: Elution Process

In High-Performance Liquid Chromatography (HPLC), the elution process is critical to the separation of analytes and the quality of chromatographic results. Elution describes how compounds move through the column and separate based on their interactions with the mobile and stationary phases. This process determines the resolution, peak shape, and retention times in the chromatogram, which are essential for identifying and quantifying components in complex mixtures. Understanding the elution...

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Updated: Jun 16, 2026

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature
11:04

Synthesis of Ionic Liquid Based Electrolytes, Assembly of Li-ion Batteries, and Measurements of Performance at High Temperature

Published on: December 20, 2016

Ionic liquids in analytical chemistry.

Ping Sun1, Daniel W Armstrong

  • 1Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, TX 76019, USA.

Analytica Chimica Acta
|February 2, 2010
PubMed
Summary
This summary is machine-generated.

Ionic liquids (ILs), composed entirely of ions, offer unique properties for chemical analysis. This review highlights recent advancements in IL applications across various analytical chemistry techniques.

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From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding

Published on: March 24, 2018

Area of Science:

  • Analytical Chemistry
  • Materials Science

Background:

  • Ionic liquids (ILs) are novel materials composed entirely of ions.
  • ILs exhibit unique properties like low volatility, tunable viscosity, and conductivity.
  • These properties make ILs highly suitable for diverse analytical applications.

Purpose of the Study:

  • To review recent advancements in the application of ionic liquids within analytical chemistry.
  • To cover major subdisciplines where ILs are making an impact.

Main Methods:

  • Literature review of recent publications on ionic liquids in analytical chemistry.
  • Categorization of IL applications by analytical technique.

Main Results:

  • Significant growth in IL research within analytical chemistry noted.
  • ILs have found applications in extractions, chromatography (GC, LC), capillary electrophoresis, mass spectrometry, electrochemistry, sensors, and spectroscopy.

Conclusions:

  • Ionic liquids are increasingly important in analytical chemistry due to their versatile properties.
  • Continued research promises further innovative applications of ILs in chemical analysis.