anion exchange
The process by which an anion in a mobile (liquid) phase exchanges with another anion previously bound to a solid, positively charged phase, the latter being an anion exchanger. It takes place when Cl is exchanged for OH in desalting. The reaction is Cl (in solution) + (OH on anion exchanger +) → (Cl on anion exchanger) + OH (in solution); combined with cation exchange, NaCl is removed from solution. A. may also be used chromatographically, to separate anions, and medicinally, to remove an anion ( e.g., Cl) from gastric contents or bile acids in the intestine.

Medical dictionary. 2011.

Look at other dictionaries:

  • anion exchange — noun : a chemical process in which anions are exchanged or removed: a. : ion exchange in which one anion (as chloride or hydroxide) is substituted for one or more other anions (as sulfate) b. : a process in which anions in the form of acids are… …   Useful english dictionary

  • anion exchange —    Ion exchange process in which anions in solution are exchanged for other anions from an ion exchanger [6] …   Lexicon of Cave and Karst Terminology

  • anion-exchange resin — anijonitinė derva statusas T sritis radioelektronika atitikmenys: angl. anion exchange resin vok. Anionenaustauschharz, n rus. анионообменная смола, f pranc. aniorésine, f …   Radioelektronikos terminų žodynas

  • anion exchange resin — anijonitinė derva statusas T sritis chemija apibrėžtis Sintetinis organinis anijonitas. atitikmenys: angl. anion exchange resin rus. анионнообменная смола …   Chemijos terminų aiškinamasis žodynas

  • anion exchange resin — an ion exchange resin (q.v.) that exchanges anions; pharmacologic uses include treatment of familial hypercholesterolemia and of pruritus associated with partial biliary obstruction …   Medical dictionary

  • anion exchanger — noun : an anion exchange agent that can exchange its anion with the anion or anions of a solution passed through it or that can adsorb anions in the form of acids; especially : an insoluble basic synthetic organic resin usually containing amine… …   Useful english dictionary

  • anion exchanger — Family of integral membrane proteins that perform the exchange of chloride and bicarbonate across the plasma membrane. Best known is band III of the red blood cell …   Dictionary of molecular biology

  • anion exchanger — An insoluble solid, usually a polystyrene or a polysaccharide, with cation groups ( e.g., NR3+ or NR2H+), which can attract and hold anions that pass by in a moving solution in exchange for anions previously held …   Medical dictionary

  • 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

  • Ion exchange — Ion exchanger Ion exchange resin beads …   Wikipedia

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