Analysis of Oxyhalides and Anions in River Water (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 to the Ministry of Health, Labor and Welfare in Japan.
Oxyhalides and anion standards in river water 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

Std. (1mg/L each) 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