Organic Acid in Phosphoric Acid

Citric acid in phosphoric acid was analyzed using RSpak DE-613 and KC-811.


Sample :
1. Phosphoric acid
2. Citric acid
3. Malic acid
4. Lactic acid
5. Succinic acid
6. Fumaric acid

Columns      : Shodex RSpak KC-LG (8.0mmID*50mm) + DE-613(6.0mmID*150mm) x 2 + KC-811 (8.0mmID*300mm) x 3 
Eluent       : 3mM HClO4 aq.
Flow rate    : 1.0mL/min
Detector     : Non-suppressed coductivity 
Column temp. : 60deg-C