Anion Standards (21) (NI-424 Organic Acid)

IC NI-424 has high theoretical plate number (more than 5,000). Carbonate and other anions can be separated well with NI-424.


Sample : 20micro-L
1. Acetic acid 20.0mg/mL
2. Formic acid 20.0mg/mL
3. Malic acid 20.0mg/mL
4. Tartaric acid 20.0mg/mL
5. Oxalic acid 20.0mg/mL

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. SO₄^2- 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     : Non-suppressed conductivity
Column temp. : 40deg-C

^* CyDTA: trans-1,2-Diaminocyclohexane-N,N,N',N'-tetraacetic acid