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. PO43- (15mg/L)
10. SO42- (40mg/L)
Column : Shodex IC SI-52 4E (4.0mmID*250mm)
Eluent : 3.6mM Na2CO3 aq.
Flow rate : 0.8mL/min
Detector : Suppressed conductivity