anion exchange - Hutchinson encyclopedia article about anion exchange Printer Friendly
The Free Dictionary
1,016,989,015 visitors served.
?
Dictionary/
thesaurus
Medical
dictionary
Legal
dictionary
Financial
dictionary
Acronyms
 
Idioms
Encyclopedia
Wikipedia
encyclopedia
?

ion exchange
(redirected from anion exchange)

    Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.06 sec.

ion exchange

Process whereby an ion in one compound is replaced by a different ion, of the same charge, from another compound. Ion exchange is used in commercial water softeners to exchange the dissolved ions responsible for the water's hardness with others that do not have this effect. For example, when hard water is passed over an ion-exchange resin, the dissolved calcium and magnesium ions are replaced by either sodium or hydrogen ions, so the hardness is removed. The addition of washing soda to hard water is also an example of ion exchange:

Na2CO3(aq) + CaSO4(aq) → CaCO3(s) + Na2SO4(aq)

Ion exchange is the basis of a type of chromatography in which the components of a mixture of ions in solution are separated according to the ease with which they will replace the ions on the polymer matrix through which they flow. The exchange of positively charged ions is called cation exchange; that of negatively charged ions is called anion exchange.
?Page tools
Printer friendly
Cite / link
 Email
Feedback
?Sign in SSL protected
Email:
Password:
Register

? Mentioned in ? References in periodicals archive
 
L-55RII co-dried aluminum-magnesium hydroxycarbonate improved synthetic hydrotalcite has proven effective in neutralizing residual acidity in various synthetic polymers by anion exchange because of its lattice-layer structure.
PVC heat stabilizers by Plastics Technology
Before these analyses, samples were dried and purified using Dowex AG1-X8 anion exchange resin (50-100 mesh) (Bio-Rad Labs, Hercules, CA) and high-purity (Seastar) hydrobromic acid.
Lead contamination in cocoa and cocoa products: isotopic evidence of ... by Flegal, A. Russell / Environmental Health Perspectives
GeneThera's PURIVAX(TM), is a multi-resin anion exchange chromatography system that dramatically improves biological purity and viral titer of recombinant Adenovirus and AAV vectors.
PURIVAX (TM) Technology from GeneThera Can Facilitate Faster ... by Business Wire
More results
 
Hutchinson browser? ? Full browser
 
 
Hutchinson Encyclopedia
?

Disclaimer | Privacy policy | Feedback | Copyright © 2008 Farlex, Inc.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This information should not be considered complete, up to date, and is not intended to be used in place of a. Terms of Use.