Analysis of Oxyhalides and Anions in Rain Water (SI-52 4E)

Please use this column with 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 in river water were analyzed using IC SI-52 4E. 1mL of Ethylenediamine (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

Sample: 50μL River water containing EDA 50mg/L

1. F^–   
2. ClO₂^–
3. BrO₃^–
4. Cl^–
5. HCO₃^–
6. NO₂^–
7. Br^–
8. ClO₃^–
9. NO₃^–
10. HPO₄^2-
11. SO₄^2-

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