Anion Standards (8) (Eluent : Octanesulfonic Acid and Boric Acid)

Anion standards were analyzed using IC I-524A. A mixture of octanesulfonic acid and boric acid is used as the eluent. This eluent is good for obtaining a low background and a stable baseline even when a large quantity of sample is injected. Therefore, it is suited for low concentration samples. No system peak will appear with this eluent.

(Preparation of eluent)
Put 0.195g of reagent grade sodium octanesulfonic acid and 1.22g of reagent grade boric acid into a messflask and dilute with pure water to make up a 1 liter solution and dissolve it using an ultrasonic vibrator.

Refer to High Sensitive Detection Method for Anions.

Sample :
1. F^–
2. Cl^–
3. NO₂^–
4. Br^–
5. NO₃^–
6. I^–
7. SO₄^2-
8. S₂O₃^2-

 Column : Shodex IC I-524A (4.6mmID*100mm)
 Eluent : 0.9mM Sodium 1-octanesulfonate + 20mM Boric acid(pH5.3)
 Flow rate : 1.2mL/min
 Detector : Shodex CD
 Column temp. : 40°C