Anion Standards (3) (I-524A)

Anion standards were analyzed using IC I-524A. This eluent is suitable for the separation of ions that elute before chloride. After each sample is analyzed, it is necessary to wash the column with 200 to 300micro-L of 0.1M tartaric acid when the sample contains NO₃^-, SO₄^2-, etc. because they elute very slowly and may be remaining inside the column.

(Preparation of eluent)
(1) Put 10mL of 0.1M reagent grade tartaric acid.
(2) Dilute with purified water to make up a 1 liter solution.
(3) Pass through a 0.2micro-m membrane filter before use.


Sample :
1. Acetic acid
2. Succinic acid
3. H₂PO₄^-
4. H₂PO₂^-
5. H₂PO₃^-
6. BrO₃^-,ClO₂^-
7. Cl^-

Column       : Shodex IC I-524A (4.6mmID*100mm)
Eluent       : 1mM Tartaric acid(pH3.3)
Flow rate    : 1.2mL/min
Detector     : Shodex CD
Column temp. : 40deg-C