ion exclusion

chemistry

Written by

The Information Architects of Encyclopaedia Britannica

Last updated

June 29, 2026

Quick Summary

Ion exclusion is a process used to separate materials in a solution. This method utilizes an ion-exchange resin that specifically excludes highly ionized particles while retaining those that are slightly ionized or not ionized at all. This technique is a form of chromatography, a method for separating components of a mixture. In ion-exchange chromatography, the separation is based on the differing affinities of ions for the stationary phase, which is the ion exchanger. This allows for the selective removal and separation of various ions from solutions, which is valuable in both laboratory analysis and industrial applications like water purification.123456

Summary created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.

6 Britannica Sources

Ask Britannica AI about this topic

Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.

sugar
Molasses processing
One prominent desugarization process is ion exclusion, which separates compounds by their molecular weight and electrical charge. A fraction containing salts and high-molecular-weight colorants and saccharides comes first off the resin column; then comes a sucrose fraction, and then a betaine fraction (trimethylglycine, a component of sugar beets), which may…
Read More
One prominent desugarization process is ion exclusion, which separates compounds by their molecular weight and electrical charge. A fraction containing salts and high-molecular-weight colorants and saccharides comes first off the resin column; then comes a sucrose fraction, and then a betaine fraction (trimethylglycine, a component of sugar beets), which may…
Read More