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Anions and Organic Acids (NI-424)



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