Which resin is used in ion exchange chromatography?
Which resin is used in ion exchange chromatography?
Anion resins and cation resins are the two most common resins used in the ion-exchange process. While anion resins attract negatively charged ions, cation resins attract positively charged ions.
What is used as exchanger in ion exchange method?
Ion exchangers can be ion exchange resins (functionalized porous or gel polymer), zeolites, montmorillonite, clay, or even soil humus.
What is the purpose of the resin in an ion exchange softener?
Resin is the material used in water softeners to facilitate the process of ion exchange that collects the hard water minerals from your water.
What is resin in ion chromatography?
Ion exchange chromatography resins are composed of positively or negatively charged functional groups that are covalently bound to a solid matrix. Common matrices are cellulose, agarose, polymethacrylate, polystyrene, and polyacrylamide. The latter three matrices allow higher flow rates.
How do you choose ion exchange resin?
Selecting Ion-Exchange Resins The internal structure of the resin beads, i.e., whether microporous (gel-type) or macroporous, is important in the selection of an ion exchanger. Macroporous resins, with their high effective surface area, facilitate the ion exchange process.
What are ion exchangers with examples?
Ion exchangers are natural substances—for example, certain clays—or deliberately synthesized resins containing positive ions (cation exchangers) or negative ions (anion exchangers) that exchange with those ions in solution having a greater affinity for the exchanger.
What is the application of ion exchangers?
Ion exchange finds its major industrial application in the treatment of water. Hard water—caused by the presence of calcium and magnesium ions, which form insoluble precipitates with soaps—is softened by exchanging its calcium and magnesium ions with sodium ions.
Which resin is used in softener?
The resin in most modern softeners (polystyrene divinylbenzene) consists of millions of tiny plastic beads, all of which are negatively charged exchange sites. The ions considered in this process (calcium, magnesium and sodium) are all positively charged ions.
What is ion exchange capacity of resin?
Definitions. In general terms, the capacity of an ion exchange resin can be expressed as the quantity of ions that can be taken up by a specific volume of the resin.
What are the types of ion exchange resins?
Ion exchange resins consists of two main types, i.e., cation exchange resins, that exchange positively charged ions, such as sodium, for calcium, and anion exchange resins, that exchange negatively charged ions, such as chloride, for arsenic.
What are the 3 types of resin?
Polyester Resins. Polyester resins are formed from the reaction of dibasic organic acids and polyhydric alcohols.