Organic acid standards were analyzed using RSpak KC-811.
Sample :
1. Oxalic acid , 2. α-Ketoglutaric acid
3. Pyruvic acid, 4. 2-Ketogluconic acid
5. Citric acid, 6. Tartaric acid
7. Malonic acid, 8. Galacturonic acid
9. Gluconic acid, 10. Malic acid
11. Ascorbic acid , 12. Fumaric acid
13. Succinic acid, 14. Formic acid
15. Acetic acid, 16. Pyroglutamic acid
17. Levulinic acid, 18. Propionic acid
Columns : Shodex RSpak KC-811 (8.0mmI.D. x 300mm) x 4 Eluent : 1mM HClO4 aq. Flow rate : 1.0mL/min Detector : VIS(430nm) (post column method) Column temp. : 40°C
