Analysis of Oxyhalides and Anion Standards (SI-52 4E)

Please use this column with a suppressor-type ion chromatography system.

Chloric acid should be analyzed by ion chromatography for water quality standards in accordance with the Ministry of Health, Labor and
Welfare in Japan. Oxyhalides and anion standards were analyzed using Shodex IC
SI-52 4E 1mL of Ethylendiamine (EDA) solution (50mg/mL)
is to be added into the 1L sample, to prevent the generation of chloric acid through the reaction between chlorous acid and residual chlorine.

Sample: 50µL

Cation std. containing EDA 50mg/L

1. F^–                           2. ClO₂^–

3. BrO₃^–                 4. Cl^–

5. HCO₃^–              6. NO₂^–

7. Br^–                      8. ClO₃^–

9. NO₃^–                10. PO₄^3-

11. SO₄^2-

 Column : Shodex IC SI-52 4E (4.0mmID*250mm)
 Eluent : 3.6mM Na2CO3 aq.
 Flow rate : 0.8mL/min
 Detector : Suppressed conductivity
 Column temp. : 45°C