What is ion exchange mechanism?
Ion exchange is a chemical reaction in which free mobile ions of a solid, the ion exchanger, are exchanged for different ions of similar charge in solution. The exchanger must have an open network structure, either organic or inorganic, which carries the ions and which allows ions to pass through it.
How many types of ion exchange are there?
There are two general types of ion exchange resins: those that exchange positive ions, called cation exchange resins, and those that exchange negative ions, called anion exchange resins. A cation is an ion with a positive charge.
What are the 4 types of ion exchangers?
Ion exchangers are either (i) cation exchangers, which exchange positively charged ions—cations, or (ii) anion exchangers which exchange negatively charged ions—anions….
- Strong-acid cation resins.
- Weak-acid cation resins.
- Strong-base anion resins.
- Weak-base anion resins.
What is ion exchange chromatography PPT?
Principle • Ion exchange chromatography relies on the attraction between oppositely charged stationary phase, known as an ion exchanger, and analyte. By changing pH of the solvent (mobile phase so that X+ have no charge and is then unbounded from the matrix and can be eluted out.
Why is ion exchange used?
Ion exchange is a water treatment process commonly used for water softening or demineralization, but it also is used to remove other substances from the water in processes such as dealkalization, deionization, denitrification, and disinfection.
What is the function of ion exchangers?
Ion exchangers are either cation exchangers that exchange positively charged ions (cations) or anion exchangers that exchange negatively charged ions (anions). There are also amphoteric exchangers that can exchange both cations and anions simultaneously.
What are the types of ion exchange?
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 ion exchangers give example?
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 principle of ion exchange chromatography?
Principle of Ion Exchange Chromatography The molecules separated on the basis of their charge are eluted using a solution of varying ionic strength. By passing such a solution through the column, highly selective separation of molecules according to their different charges takes place.
What are the application of ion exchange chromatography?
Ion exchange chromatography can be applied for the separation and purification of many charged or ionizable molecules such as proteins, peptides, enzymes, nucleotides, DNA, antibiotics, vitamins and etc. from natural sources or synthetic origin.
What are the two uses of ion?
Uses for ion exchange chromatography drinking water analysis for pollution and other constituents. determination of water chemistries in aquatic ecosystems. determination of sugar and salt content in foods.