Tap Water (3) (I-524A)

Anions in tap water were analyzed using IC I-524A. Since phosphoric ion is not present in this sample, F^-, Cl^-, NO₃^- and SO₄^2- can be separated in a short time without t he interference of phosphoric ion peak using this eluent. When both F^- and H₂PO₄^- are present, they cannot be separated each othe with this analysis conditionr.


Sample : Tap water (Water), 100micro-L
1. F^-
2. Cl^-
3. NO₃^-
4. SO₄^2-

Column       : Shodex IC I-524A (4.6mmID*100mm)
Eluent       : 2.5mM Phthalic acid + 2.3mM Tris(hydroxymethyl)aminomethane aq.
Flow rate    : 1.2mL/min
Detector     : Non-suppressed coductivity
Column temp. : 40deg-C