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, 20 μL
1. F-
2. Cl-
3. NO2-
4. Br-
5. NO3-
6. SO42-

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

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