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Abstract

Ion exclusion chromatography (IEe) is a relatively
old separation technique, attributed to Wheaton and
Bauman, which is now staging an impressive comeback
for the simultaneous determination of ionic
species. IEC provides a useful technique for the separation
of ionic and nonionic substances using an ion
exchange stationary phase in which ionic substances
are rejected by the resin while nonionic or partially
ionized substances are retained and separated by partition
between the liquid inside the resin particles and
the liquid outside the particles. The ionic substances
therefore pass quickly through the column, but
nonionic (molecular) or partially ionized substances
are held up and are eluted more slowly.
IEC is also referred to by several other names,
including ion exclusion partition chromatography,
ion chromatography-exclusion mode, and Donnan
exclusion chromatography. In this article we use the
term ion exclusion chromatography.

Item Type:	Book Section
Authors/Creators:	Tanaka, K and Haddad, PR
Publisher:	Academic Press
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