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Technique:
Ion chromatography is an analytical technique, utilized for the separation of both positively charged cations and negatively charged anions.
Application:
IC is useful in corrosion studies where the detection of contaminants at low levels is critical. Also IC is utilized for sulfates in soil necessary for stabilization studies. IC is also the method of choice for quantization of low levels of hexavalent chromium in air samples and wipes.
The Science Behind:
Anions & Cations are the two haves of an ionic pair in a solution. The sample is digested or transferred into a solution. The test solution is passed through a selective column separating the individually charged species. The separated species are detected individually. The typical detector used is based on conductivity.
Other References:
Wikipedia Definition of IC
Chromatography-online seems to be an informed source;
Chromatography-online Definition of IC
Additional Information;
Handbook of Analytical Methods
Anion - A negatively charged species such as Chloride, Cl- and Sulfate, SO4=.
Cation - A positively charged species such as Ammonia, NH4+, Sodium, Na+ and Calcium, Ca++.
Detector - Traditionally the standard detector is conductivity detector.
Cation - A positively charged species such as Ammonia, NH4+, Sodium, Na+ and Calcium, Ca++.
Detector - Traditionally the standard detector is conductivity detector.