How to classify ion chromatograph?

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Ion Chromatograph is a commonly used chromatographic analysis. It is different from traditional ion exchange chromatography. The main reason is that the resin has high cross-linking degree and low exchange capacity, and the injection volume is very small. How should I classify ion chromatographs? The following is a brief introduction to the classification of ion chromatographs. I hope to help everyone. instrument

Classification of ion chromatographs

1, ion chromatography separation

Ion chromatography separation is mainly based on the principle of ion exchange. It uses ion exchange resin with low exchange capacity to separate ions. It is the most widely used in ion chromatography. Its main filler type is organic ion exchange resin.

2, ion pair chromatography

The stationary phase of ion-pair chromatography is a hydrophobic neutral filler, and the counter ion used for anion separation is an alkylamine such as tetrabutylammonium hydroxide or cetyltrimethane hydroxide. The counter ion used for cation separation is an alkyl sulfonic acid such as sodium hexane sulfonate, sodium heptane sulfonate or the like.

3. Ion exclusion chromatography

Ion exclusion chromatography, mainly based on the Donnon membrane repulsion effect: the ionized component is not preserved by rejection, while the weak acid is made by a certain preservation principle. Ion exclusion chromatography is mainly used to separate organic acids and inorganic oxyacids such as borate, carbonate and sulfate, organic acids and the like.

4, the application of ion chromatography

Detection of inorganic anions; detection of inorganic cations and analysis of organic anions and cations, mainly including analysis of biogenic amines, organic acids and sugars.