When the sample valve is in the sample loading position, a certain volume of sample solution is injected into the sample quantitative ring. When the injection valve is switched to the injection position, the eluent replaces the sample solution in the sample quantitative loop (or the ions detected on the enrichment and concentration column are eluted) into the analysis column, and the anions on the opposite side are separated according to their different retention characteristics on the analysis column. When the eluent carries the sample through the suppressor, all cations are exchanged into hydrogen ions, hydroxide eluent is converted into water, carbonate eluent is converted into carbonic acid, and the background conductivity is reduced. At the same time, the detected anion is converted into the corresponding acid with high conductivity. The conductivity detector detects the response signal, and the data processing system records and displays the ion chromatogram. The measured ions are characterized by retention time, and the measured anions are quantified by peak height or peak area, and the corresponding ion content is measured.

This method is especially suitable for the determination of low-concentration anions in aqueous solution, such as drinking water quality analysis, high-purity water, mineral water, rainwater, various wastewater and power plant water analysis, pulp and bleach solution analysis, food analysis, ion determination in biological body fluids (urine and blood) and so on. ) and its application in steel industry and environmental protection. Ion chromatography can determine the following types of ions: organic anions, alkali metals, alkaline earth metals, heavy metals, rare earth ions and organic acids, as well as amines and ammonium salts.

I hope the answer from Anhui Confeier Testing Technology Co., Ltd. will help you ~