(Preparation of eluent)
Put 0.345g of reagent grade p-hydroxybenzoic acid and 100mL of methanol into a 1 liter messflask and dissolve; adjusted with 0.2M reagent grade diethylethanolamine and add pure water to make up a 1 liter solution.
Sample :
1. SO42-
2. S2O32-
3. S3O62-
4. S4O62-
Column : Shodex IC I-524A (4.6mmID*100mm) Eluent : 2.5mM p-Hydroxybenzoic acid(pH9.7 adjusted with Diethylethanolamine) + 10% CH3OH Flow rate : 1.2mL/min Detector : Shodex CD Column temp. : 40°C