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.

s1479

Sample : 100-fold diluted Sea water
(Water ),
20µL

1. F^–

2. CI^–

3. NO₂^–

4. Br^–

5. NO₃^–

6. SO₄^–

 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. : 25°C