Anion Standards (7) (Anions and Organic Acids) (I-524A)

Anion standards were analyzed using IC I-524A. The concentration of phthalic acid is lower than that of Anion Standards (6) (I-524A) . This eluent condition is suited to the separation of anions and organic acids.


Sample : 30 μL
1. H2PO4- 20 mg/L
2. F- 2.5 mg/L
3. Cl- 2.5 mg/L
4. NO2- 5 mg/L
5. Br- 5 mg/L
6. NO3- 5 mg/L
7. SO42- 5 mg/L
8. Malic acid 20 mg/L
9. Oxalic acid 20 mg/L
10. Fumaric acid 20 mg/L
11. Citric acid 20 mg/L


Column       : Shodex IC I-524A (4.6 mm I.D. x 100 mm)
Eluent       : 1.5 mM Phthalic acid + 1.38 mM Tris(hydroxymethyl)aminomethane
               + 300 mM Boric acid
Flow rate    : 1.2 mL/min
Detector     : Non-suppressed coductivity
Column temp. : 40 °C

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