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     : Non-suppressed coductivity
Column temp. : 40deg-C