River Water (1) (I-524A)

Anions in river water were analyzed using IC I-524A. In river water, small volume of H₂PO₄^–, Br^– and NO₂^– as well as Cl^–, NO₃^– and SO₄^2- are present. This eluent can be used to separate H₂PO₄^– and F^–.

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

5-fold diluted
River water (Water)

1. H₂PO₄^–

3. Cl^–

4. NO₂^–

5. Br^–

6. NO₃^–

7. SO₄^2-

 Column : Shodex IC I-524A
 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