Anion Standards (20) Simultaneous Analysis of HS (-), SO3 (2-), SO4 (2-) and S2O3 (2-)

Anion standards were analyzed using IC SI-90 4E
(a column for anions analysis). HS^– is difficult to detect by conductivity.
To separate and detect the above-mentioned anions,
UV and CD detector are connected in series.

Sample : 50mg/L each, 20micro-L

1. HS^–

2. SO₃^2-

3. SO₄^2-

4. S₂O₃^2-

 
 Column : Shodex IC SI-90 4E (4.0mmID*250mm)
 Eluent : 1mM Na2CO3 + 4mM NaHCO3 + 5% Acetone 
 Flow rate : 1.5mL/min
 Detector : UV(210nm) + Suppressed conductivity
 Column temp. : 25°C