Anion standards and organic acids were analyzed using IC SI-90 4E (a column for anions analysis).
Sample : 20micro-L
1. F– 2mg/L
2. Acetic acid 10mg/L
3. Formic acid 2mg/L
4. Methacrylic acid 10mg/L
5. Cl– 3mg/L
6. NO2– 5mg/L
7. Br– 10mg/L
8. NO3– 10mg/L
9. PO43- 15mg/L
10. SO42- 15mg/L
11. Oxalic acid 15mg/L
Column : Shodex IC SI-90 4E (4.0mmID*250mm)
Eluent : 12mM NaHCO3 aq.
Flow rate : 1.0mL/min
Detector : Suppressed conductivity
Column temp. : 25°C