Influence of Temperature on Retention Time (SI-52 4E)

Please use this column with suppressor type ion chromatography system.

In analysis using IC SI-52 4E,
the retention times of some anions are very sensitive to
the column temperature. An example is showed in the figure below.
Bromide (Br^–) and chlorate (ClO₃^–) are well separated at 45 °C or over,
while the separation of chlorite (ClO₂^–) and bromate (BrO₃^–) are
improved with lowering temperature.

Sample : 100micro-L

1. F^– (2mg/L)

2. ClO₂^– (1mg/L)

3. BrO₃^– (2mg/L)

4. Cl^– (10mg/L)

5. NO₂^– (5mg/L)

6. Br^– (10mg/L)

7. ClO₃^– (1mg/L)

8. NO₃^– (30mg/L)

9. PO₄^3- (15mg/L)

10. SO₄^2- (40mg/L)

 Column : Shodex IC SI-52 4E (4.0mmID*250mm)
 Eluent : 3.6mM Na2CO3 aq.
 Flow rate : 0.8mL/min
 Detector : Suppressed conductivity