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Related Concept Videos

Extraction: Advanced Methods00:56

Extraction: Advanced Methods

415
Metal ions can be separated from one another by complexation with organic ligands–the chelating agent– to form uncharged chelates. Here, the chelating agent must contain hydrophobic groups and behave as a weak acid, losing a proton to bind with the metal. Since most organic ligands used in this process are insoluble or undergo oxidation in the aqueous phase, the chelating agent is initially added to the organic phase and extracted into the aqueous phase. The metal-ligand complex is...
415
Ion-Exchange Chromatography01:09

Ion-Exchange Chromatography

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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...
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Ion Exchange01:17

Ion Exchange

547
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
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Complexometric Titration: Ligands00:43

Complexometric Titration: Ligands

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Different monodentate and polydentate ligands are used as complexing agents in complexometric titration reactions. The formation of complexes by mono- and bidentate ligands involves two or more intermediate steps, limiting their use as complexing agents. In comparison, polydentate ligands can form complexes with metal ions in a single-step process, facilitating sharper end points. This means polydentate ligands, such as amino carboxylic acid derivatives, are most commonly employed in...
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Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
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Types Of Column Chromatography01:29

Types Of Column Chromatography

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The stability and compatibility of column material with samples are crucial for efficient purification in chromatographic techniques. Various operating parameters such as pH, temperature, or solvent affect the packing of the column material, thereby determining the purification efficiency. The choice of column material also plays an essential role in deciding the operating parameters and can be modified based on the proteins that need to be purified.
Gel Filtration Chromatography
When the...
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Updated: Jun 5, 2025

A Lectin HPLC Method to Enrich Selectively-glycosylated Peptides from Complex Biological Samples
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Correction: Ion pair extractant selective for LiCl and LiBr.

Nam Jung Heo1, Ju Hyun Oh1, Aimin Li2

  • 1Department of Chemistry, Research Institute of Natural Sciences, Gyeongsang National University Jinju 52828 Korea sungkukkim@gnu.ac.kr.

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Summary
This summary is machine-generated.

This study corrects a previously published article DOI. The correction ensures accurate referencing for scientific literature and research integrity.

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Area of Science:

  • Scientific publishing
  • Chemical science
  • Research integrity

Context:

  • Correction of article DOI
  • Ensuring accurate citation
  • Maintaining scientific record

Purpose:

  • To amend the Digital Object Identifier (DOI)
  • To rectify citation errors
  • To uphold scholarly communication standards

Summary:

  • The article DOI 10.1039/D4SC03760J has been corrected.
  • This ensures proper attribution and retrieval of the scientific work.
  • Accurate DOIs are crucial for the scientific literature database.

Impact:

  • Improved discoverability of research
  • Enhanced credibility of scientific publications
  • Facilitation of accurate scholarly referencing