Anion Exchange
Anion Exchange - Related Videos
02:38
Anion Exchange Resin–Based Detection of Viruses from Bioaerosols
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2026
Source: Schaeffer, J. W., Chandler, et al. Detection of Viruses from Bioaerosols Using Anion Exchange Resin. J. Vis. Exp. (2018).This video demonstrates the detection of viruses from bioaerosols using an anion exchange resin. A liquid impinger containing the resin is used to capture viruses from the air. The resin is collected and treated with a virus lysis buffer containing carrier RNA. The lysate is transferred to a microcentrifuge tube for viral RNA isolation, followed by qRT-PCR to amplify...
06:10
Detection of Viruses from Bioaerosols Using Anion Exchange Resin
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2018
An anion exchange resin-based method, adapted to liquid impingement-based bioaerosol sampling of viruses is demonstrated. When coupled with downstream molecular detection, the method allows for facile and sensitive detection of viruses from bioaerosols.
02:59
Anion-Exchange Chromatography-Based Protein Purification: A Separation Technique to Isolate a Protein of Interest From Dialyzed Bacterial Lysate Based on Net Charge
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2025
In this video, we demonstrate an anion-exchange chromatography technique to purify human calcium-binding protein S100A12 based on the net surface charge of the protein from an Escherichia coli culture.
08:52
Ion-Exchange Chromatography
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Ion-exchange chromatography is a type of chromatography that separates analytes based on charge. A column is used that is filled with a charged stationary phase on a solid support, called an ion-exchange resin. Strong cation-exchange chromatography preferentially separates out cations by using a negatively-charged resin while strong anion-exchange chromatography preferentially selects out anions by using a positively-charged...
14:26
Purification of Extracellular Trypanosomes, Including African, from Blood by Anion-Exchangers (Diethylaminoethyl-cellulose Columns)
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Cited by 3 •
2019
This method of trypanosome separation from blood depends on their surface charge being less negative than mammalian blood cells. Infected blood is placed and treated on an anion-exchanger column. This method, the most fitting diagnostic for African trypanosomiasis, provides purified parasites for immunological, biological, biochemical, pharmaceutical and molecular biology investigations.
FAQs
The outcome reflects a balance among anion concentration, overall charge balance, and chemical affinity for the positively charged material or transport system. An anion that is held less strongly may be released when another anion is more available or better suited to the binding environment. These variables determine which ion is retained, displaced, or exchanged.
Specialized membrane exchange proteins couple the movement of one anion to the movement of another. This coupling links transport events rather than allowing each ion to move independently, helping the cell coordinate anion movement with its immediate chemical and charge conditions. Such selectivity supports controlled electrolyte regulation and contributes to acid–base balance in biological systems.
Charge balance helps determine whether an exchange can proceed without creating an unfavorable electrical condition. When anions move through an exchange system, their transfer is connected to the distribution of other charged species and to concentration differences. This relationship makes anion exchange relevant to maintaining cellular electrolyte conditions and regulating processes that depend on stable acid–base states.
In biological systems, anion exchange contributes to carbon dioxide transport by linking anion movement with the chemical handling of carbon dioxide. The exchange process helps coordinate transport across biological membranes while preserving appropriate charge relationships. This role connects membrane transport mechanisms with a broader physiological function, allowing anion exchange to participate in gas transport as well as electrolyte and acid–base regulation.
Anion-exchange chromatography separates biological molecules according to how strongly they interact with positively charged material. Proteins, nucleic acids, and other charged biomolecules can therefore be distinguished when their binding strengths differ. The method is useful for organizing complex biological samples into fractions with different interaction properties, supporting downstream analysis or purification.
Applications span both cellular investigation and sample processing. In membrane studies, anion exchange helps researchers analyze how exchange proteins contribute to electrolyte regulation, acid–base balance, and carbon dioxide transport. In chromatography, it provides a way to separate and purify proteins, nucleic acids, and other charged biomolecules, linking transport principles with practical biological analysis.