Chelating resin — Chelating resins also known as specific exchangers or chelating sorbents are usually perceived as a subgroup of ion exchange resins. Chelating resins were developed to obtain higher selectivies of at least one particular counter ion species. The… … Wikipedia
Ion exchange resin — An ion exchange resin is an insoluble matrix (or support structure) normally in the form of small (1 2 mm diameter) beads, usually white or yellowish, fabricated from an organic polymer substrate. The material has highly developed structure of… … Wikipedia
ion-exchange resin — Any of a wide variety of synthetic polymers containing positively or negatively charged sites that can interact with or bind to an ion of opposite charge from a surrounding solution. Light, porous solids in granules, beads, or sheets, they absorb … Universalium
ion-exchange reaction — ▪ chemical reaction Introduction any of a class of chemical reactions between two substances (each consisting of positively and negatively charged species called ions (ion)) that involves an exchange of one or more ionic components.… … Universalium
Chelex 100 — is a chelating material from Bio Rad[1] used to purify other compounds via ion exchange. It is noteworthy for its ability to bind transition metal ions. It is a styrene divinylbenzene co polymer containing iminodiacetic acid groups. A… … Wikipedia
Chemcatcher — Chemcatcher® is a passive sampling device currently being used throughout the world to measure time weighted average (TWA) [1] concentrations of organic and heavy metal pollutants in water. The Chemcatcher® concept was developed[2] [3] by… … Wikipedia
Chelex® — A chelating resin that has a high affinity for polyvalent metal ions. It is composed of stytrene divinylbenzene copolymers containing paired iminodiacetate ions which act as chelatin groups … Forensic science glossary
rare-earth element — /rair errth /, Chem. any of a group of closely related metallic elements, comprising the lanthanides, scandium, and yttrium, that are chemically similar by virtue of having the same number of valence electrons. Also called rare earth metal. [1955 … Universalium
Ethylenediaminetetraacetic acid — EDTA redirects here. For other uses, see EDTA (disambiguation). Ethylenediaminetetraacetic acid … Wikipedia
Water softening — A water softener reduces the dissolved calcium, magnesium, and to some degree manganese and ferrous iron ion concentration in hard water.These hardness ions cause three major kinds of undesired effects. Most visibly, metal ions react with soaps… … Wikipedia
Displacement chromatography — is a chromatography technique in which a sample is placed onto the head of the column[n 1] and is then displaced by a solute that is more strongly sorbed than the components of the original mixture. The result is that the components are resolved… … Wikipedia
