The SHZY-1 column suppressor uses ion exchange resin to achieve the inhibitory effect, and the H+ ion exchange between the cations in the leachate and the resin of the suppressor is completed to complete the inhibitory effect.
The SHZY-1 column suppressor uses ion exchange resin to achieve the inhibitory effect, and the H+ ion exchange between the cations in the leachate and the resin of the suppressor is completed to complete the inhibitory effect. Through the suppression effect of the suppressor, the background conductance can be reduced and the sensitivity of the ions to be measured can be improved.
Reversible exchange is performed with solute ions with the same charge in the mobile phase based on dissociable ions on the ion exchange resin. Because of the different affinity of different ions to ion exchange resins, they are separated in the column. For example, when NaOH is used as an effluent to analyze F−, Cl− and SO42− in the sample, after the sample solution is injected, it will first directly exchange ion with the ion exchange position of the analysis column. The anions retained on the column will be replaced by the OH− group in the effluent and eluted from the column. The ions with weak affinity for the resin are eluent successively before the ions with strong affinity.
The suppressor uses electrodes to electrolyze water to generate H+ (for anion analysis) or OH− (for cation analysis). Under the combined action of the electric field and the ion exchange membrane, the directional migration and exchange of ions are achieved. Taking anion analysis as an example, in anion suppressor, the H+ produced by electrolyzing water is transferred to the leachate flow path through a cation exchange membrane and exchanged with the cations in the leachate (such as Na+), converting the strong electrolyte (such as Na2CO3) in the leachate into carbonic acid with weak conductivity (H2CO3) thereby reducing the background conductivity. At the same time, after the anions in the sample pass through the suppressor, their corresponding cations are replaced by H+, such as NaCl, converted into HCl. Due to the high conductivity of H+, the detection signal of the sample ions is enhanced and the detection sensitivity is improved. Furthermore, the "counter ions" in the sample (such as cations) enter the waste liquid during the inhibition process.
Qingdao Shenghan independently developed the SHZY-1 column suppressor is a chemical regeneration inhibitor. The column suppressor product has the characteristics of long life, high capacity, simple maintenance, good anti-pollution against heavy metal ions and organic impurities, and strong organic solvent adhesion. It effectively compensates for the defect of membrane sting inhibitors being easily damaged when detecting samples of complex components. The main applications are for chemical, lithium batteries, hazardous and other industries.
Suppression ability: Different suppression capacity suppression columns can be selected according to customer requirements;
Functional features: can realize independent switching and automatic regeneration and balance;
Eluent liquid system: CO32- /HCO3-/OH-;
Consumable material warranty: Column suppressor comes with 2 suppressor columns at standard;
Samples that are resistant to heavy metals and organic impurities.
