Tap Water (4) (I-524A)

Based on the method described in the Japanese regulation for water supply, anions were analyzed using IC I-524A.

Sample : 100micro-L each Anion standards

1. H₂PO₄^2- 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 : Shodex CD
 Column temp. : 40°C