Sea Water (3) (SI-90 4E)

Please use this column with suppressor type ion chromatography system.

Anions in sea water were analyzed by anion-chromatography column, IC SI-90 4E Compared to chloride which is highly concentrated in sea water, concentration of nitrous acid is too low, and thus interfered by chloride ion peak to be monitored by a CD. Since nitrous, bromine, and nitrate ions have UV absorbance, they can be monitored by UV detector without being affected by chloride ion.

Sample : 100-fold diluted Sea water (Water), 20micro-L
1. F^-
2. Cl^-
3. NO₂^-
4. Br^-
5. NO₃^-
6. SO₄^2-

Column       : Shodex IC SI-90 4E (4.0mmID*250mm)
Eluent       : 1.8mM Na2CO3 + 1.7mM NaHCO3 aq.
Flow rate    : 1.0mL/min  
Detector     : Suppressed conductivity, UV(210nm)
Column temp. : 25deg-C