IC - Ion Chromatography

Ion chromatography (or ion-exchange chromatography) separates ions  based on their affinity to an ion exchanger. The result is a so-called chromatogram in which the transient signals can be assigned to individual ions (by retention time) and quantified (by peak integration an calibration with standard solutions)

We use anion-exchange chromatography in which the stationary phase is positively charged and negatively charged molecules are attracted to it. The water-soluble negative ions bind to moieties which are positively charged by forming ionic bonds to the insoluble stationary phase. The bound molecules then can be eluted and collected running an eluant which contains higher concentration of anions through the column or changing pH of the column. As detectors conductivity- or UV-detectors are used.


  • Analysis of halide content of plastics (e.g. flame retardants)
  • Analysis of corrosion caused by halides or inorganic salts (e.g. PCB corrosion phenomena)
  • Halide ougassing (e.g. HF)

Technical Specifications

Thermo Scientific - Dionex ICS-1600 Ion Chromatography System

  • Serial dual-reciprocating pistons, microprocessor-controlled constant stroke, variable speed
  • Wide flow rate range supports 2, 3, 4, and 5 mm column formats.


Chemical and Physical Analytics

Chemical and Physical Analytics
Mittelstetter Weg 2, 86830 Schwabmünchen