Although oxalic acid cannot be separated from chloride (from NaCl) under normal eluent conditions, the quantification of oxalic acid is made possible by using 50 mM perchloric acid as an eluent using RSpak KC-811. Under such conditions, oxalic acid should be detected by RI or UV (at 210 nm) detector.


Sample :
1. Anionic Compounds (Cl^-)
2. Oxalic acid
3. Citric acid
4. Tartaric acid
5. Phosphoric acid
6. Malic acid
7. α-Ketoglutaric acid
8. Malonic acid
9. Pyruvic acid
10. Succinic acid
11. Lactic acid
12. Fumaric acid
13. Acetic acid
14. Pyroglutamic acid

Columns      : Shodex RSpak KC-811 (8.0 mm I.D. x 300 mm) x 2
Eluent       : 50 mM HClO4 aq.
Flow rate    : 1.0 mL/min
Detector     : RI
Column temp. : 50 °C