chelating resin
Quick Summary
A chelating resin is a type of ion-exchange resin that contains specific functional groups, such as iminodiacetate, which can form complexes with metal ions. These resins are particularly effective at binding with most metallic elements, excluding alkali metals, with varying strengths depending on the specific metal. This ability makes them valuable in analytical chemistry for separating and concentrating trace amounts of metals.1
Chelates, in general, are compounds where a central metal atom is attached to a ligand molecule in a ring structure. These chelates are known for their stability, a phenomenon called the chelate effect, which is attributed to an increase in entropy. Chelating agents, like EDTA, are used in medicine to treat metal poisoning by binding toxic metal ions.2
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ion-exchange resinThese are the chelating resins and the electron-exchange resins. Chelating resins are styrene-divinylbenzene polymers to which iminodiacetate groups are introduced. This functional group forms complexes with all the metallic elements except the alkali metals, with stabilities that vary with the different metals; in analytical chemistry, they are usedā¦
Read MoreThese are the chelating resins and the electron-exchange resins. Chelating resins are styrene-divinylbenzene polymers to which iminodiacetate groups are introduced. This functional group forms complexes with all the metallic elements except the alkali metals, with stabilities that vary with the different metals; in analytical chemistry, they are usedā¦
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ion-exchange reactionIon-exchange materialsā¦is iminodiacetate, āCH2N(CH2COOH)2, which forms chelated complexes (structures held together by secondary bonds) with all metals except the alkali metals. The stability of these complexes varies widely from metal to metal. The chelating resins are used in chemical analysis to separate and concentrate trace metals.
Read Moreā¦is iminodiacetate, āCH2N(CH2COOH)2, which forms chelated complexes (structures held together by secondary bonds) with all metals except the alkali metals. The stability of these complexes varies widely from metal to metal. The chelating resins are used in chemical analysis to separate and concentrate trace metals.
Read More- ion-exchange reactionIn the laboratory
Chelating resins are used to collect trace metals from seawater. Further, a copper-loaded chelating resin also adsorbs, by coordination, traces of amino acids from seawater. Miscellaneous analytical uses of ion exchange include the dissolving of sparingly soluble salts like calcium sulfate, the determination of totalā¦
Read MoreChelating resins are used to collect trace metals from seawater. Further, a copper-loaded chelating resin also adsorbs, by coordination, traces of amino acids from seawater. Miscellaneous analytical uses of ion exchange include the dissolving of sparingly soluble salts like calcium sulfate, the determination of totalā¦
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