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The establishment of EVISA is funded by the EU through the Fifth Framework Programme (G7RT- CT- 2002- 05112).

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ion chromatography

(IC) - An ion-exchange technique in which low concentrations of anions or cations are determined using low-capacity ion exchangers with weak buffers. Conductivity detectors are often used. Ion chromatography is practiced in two forms. In suppressed IC, a second column is used to remove the buffer ions so that sample ions can be more easily detected; membrane separator is sometimes used. In nonsuppressed IC, weakly conducting buffers at low concentration are carefully selected, and the entire effluent is passed through the detector; ions are detected above the background signal.

The term "ion chromatography" was found in the following pages:


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