Non-suppressor ion chlomatography column, IC
NI-424 was used to analyze organic acids. Under this condition, furmaric acid eluetes before oxyalic acid.
Sample : 20 µL
1. Acetic acid 20.0mg/L
2. Formic acid 20.0mg/L
3. Malic acid 20.0mg/L
4. Tartaric acid 20.0g/mL
5. Oxalic acid 20.0mg/L
6. H2PO4– 20.0mg/L
7. F– 1.5mg/L
8. Cl– 2.5mg/L
9. NO2– 6.0mg/L
10. Br– 10.0mg/L
11. NO3– 10.0mg/L
12. SO42- 10.0mg/L
Column : Shodex IC NI-424 (4.6mmID*100mm)
Eluent : 8mM 4-Hydroxybenzoic acid + 2.8mM Bis-Tris + 2mM Phenylboronic acid + 0.005mM *CyDTA aq.
Flow rate : 1.0mL/min
Detector : Shodex CD
Column temp. : 40°C
* CyDTA: trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid