Anion standards were analyzed using IC I-524A. This eluent is suitable for the separation of ions that elute before chloride. After each sample is analyzed, it is necessary to wash the column with 200 to 300 μL of 0.1 M tartaric acid when the sample contains NO₃^-, SO₄^2-, etc. because they elute very slowly and may be remaining inside the column.


Sample : 10 mg/L each, 50 μL
1. Acetic acid
2. H₂PO₄^-
3. H₂PO₂^-
4. H₂PO₃^-
5. ClO₂^-
6. BrO₃^-
7. Cl^-

Column       : Shodex IC I-524A (4.6 mm I.D. x 100 mm)
Eluent       : 1 mM Tartaric acid aq.
Flow rate    : 1.2 mL/min
Detector     : Non-suppressed coductivity
Column temp. : 40 °C