Tap Water (4) (I-524A)

Based on the method described in the Japanese regulation for water supply, anions were analyzed using IC I-524A.
Please refer to 'Regulation for Water Supply'.


Sample : 100micro-L each
Anion standards
1. H₂PO₄^-　10mg/L
2. F^- 1mg/L
3. Cl^- 1mg/L
4. NO₂^- 5mg/L
5. Br^- 5mg/L
6. NO₃^- 5mg/L
7. SO₄^2- 5mg/L

Tap water (Water)
2. F^-
3. Cl^-
6. NO₃^-
7. SO₄^2-

Column       : Shodex IC I-524A (4.6mmID*100mm)
Eluent       : 2.0mM Phthalic acid + 1.84mM Tris(hydroxymethyl)aminomethane + 300mM Boric acid aq.
Flow rate    : 1.2mL/min
Detector     : Non-suppressed coductivity
Column temp. : 40deg-C