Sulfate and Sulfite

This chromatogram shows a data of analysis of standard anions using IC I-524A with an alkaline eluent. When the pH of the eluent is higher than 7.0, 10% methanol should be added to maintain the durability of the packing material.


Sample : 10mg/L each, 100micro-L
1. SO₄^2-
2. SO₃^2-
3. S₂O₃^2-
4. SCN^-

Column       : Shodex IC I-524A (4.6mmID*100mm)
Eluent       : 0.25mM p-Hydroxybenzoic acid + 1.2mM N,N-Diethylethanolamine + 10% CH3OH
Flow rate    : 1.5mL/min
Detector     : Non-suppressed coductivity
Column temp. : 50deg-C