ion exchange

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ion exchange

n.
A reversible chemical reaction between an insoluble solid and a solution during which ions may be interchanged, used in water softening and in the separation of radioactive isotopes.

ion exchange

n
(Chemistry) the process in which ions are exchanged between a solution and an insoluble solid, usually a resin. It is used to soften water, to separate radioactive isotopes, and to purify certain industrial chemicals

i′on exchange`


n.
the process of reciprocal transfer of ions between a solution and a resin or other suitable solid.
[1920–25]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ion exchange - a process in which ions are exchanged between a solution and an insoluble (usually resinous) solidion exchange - a process in which ions are exchanged between a solution and an insoluble (usually resinous) solid; widely used in industrial processing
natural action, natural process, action, activity - a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity"
Translations

ion exchange

nscambio ionico
References in periodicals archive ?
Traditional anion-exchange resin-based columns rely on gravity flow to purify the DNA, and also require an isopropanol precipitation step, which takes more than two hours.
Table 2 illustrates the influence of pH upon processing of the enzyme solution by strong anion-exchange resins.
The structures, compositions, and morphologies of the as-synthesized films before and after the anion-exchange reaction were characterized by means of glancing-angle X-ray diffraction, Fourier transform infrared, X-ray photoelectron spectroscopy, and scanning electron microscope techniques.
The PCR products were separated and quantified using an anion-exchange column within 30 min and in a single step.
1986) proposed a method using a biphasic aqueous-organic extraction to eliminate the sample matrix, followed by a posterior herbicides extraction from the water phase using a chelant and anion-exchange resins before HPLC determination, achieving recoveries around 80%.
A variety of AECFs by varying the stoicheometry between PAN and silica gel were prepared and highest anion-exchange capacity was observed in 1:1 stoichiometry (Table 1).
During the process, cations are replaced with hydrogen ions using cation-exchange resins; anions are replaced with hydroxyls using anion-exchange resins.
Concentration influence of trimethylamine, temperatures, durations of reaction and dependence of properties anion-exchange resin on a parity of benzyl bromide and furfural in a reactionary mix (Tursunov, Zajnutdinova, and Nazirova, 1999) were studied.
Kekesi separation of impurities from the base metal dissolved in HCl solution may be comprehensive and efficient by anion-exchange.
In 2003, a team of scientists from DuPont, MIT and the University of Illinois at Urbana-Champaign developed a new method of separating metallic CNTs from semiconducting CNTs using single-stranded DNA and anion-exchange chromatography.
Methods: The FPLC method, using a DEAE Sepharose, Hi Trap[TM] anion-exchange column chromatography technique was set up for [HbA.