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Ion chromatography (or ion-exchange chromatography) is a form of chromatography that separates ions and ionizable polar molecules based on their affinity to the ion exchanger. [1] It works on almost any kind of charged molecule —including small inorganic anions, [ 2 ] large proteins , [ 3 ] small nucleotides , [ 4 ] and amino acids .
In 1986, Regnier’s group synthesized a stationary phase that had characteristics of anion exchange chromatography (AEX) and hydrophobic interaction chromatography (HIC) on protein separation. [8] In 1998, a new form of MMC, hydrophobic charge induction chromatography (HCIC), was proposed by Burton and Harding.
Anion exchange resins will bind to negatively charged molecules, displacing the counter-ion. Anion exchange chromatography is commonly used to purify proteins, amino acids, sugars/carbohydrates and other acidic substances [3] with a negative charge at higher pH levels. The tightness of the binding between the substance and the resin is based on ...
Like other rare earths, this element is never found as a free element in nature but is found in monazite and bastnäsite ores. [9] It has historically been very difficult and expensive to separate rare earths from each other in their ores but ion-exchange chromatography methods [ 43 ] developed in the late 20th century have greatly reduced the ...
Ion exchange chromatography is a very powerful tool for use in protein purification and is frequently used in both analytical and preparative separations. It is especially useful when purifying nucleic-acid binding proteins, where separation of the protein from the bound nucleic acid is required to obtain a pure sample devoid of nucleic acids ...
Hydrophilic interaction chromatography (or hydrophilic interaction liquid chromatography, HILIC) [1] is a variant of normal phase liquid chromatography that partly overlaps with other chromatographic applications such as ion chromatography and reversed phase liquid chromatography.
Versatility: Ion exchange can be applied to various water treatment applications. Consistent performance: Ion exchange systems offer consistent and predictable performance, providing reliable water treatment over time. Scalability: Ion exchange systems can be easily scaled up or down to meet different treatment capacities and requirements.
Ion chromatography is a sensitive and stable technique that can measure lithium, ammonium NH 4 and many other low molecular weight ions using ion exchange technology. Gas chromatography can be used to determine methane, carbon dioxide, cyanide, oxygen, nitrogen and many other volatile components at reasonable sensitivities.
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