Effects of Added Acetonitrile on the Retention Time (SI-90 4E)

Please use this column with suppressor type ion chromatography system.

Ion chromatography column, IC SI-90 4E, was used for the quantification of several anions. Addition of acetonitrile to the eluent will decrease the retention time for the elution of I- and SCN- ions.

Sample : 20 μL
F- 2 mg/L
Cl- 3 mg/L
NO2- 5 mg/L
Br- 10 mg/L
NO3- 10 mg/L
HPO42- 15 mg/L
SO42- 15 mg/L
I- 50 mg/L
S2O32- 50 mg/L
SCN- 50 mg/L

Column       : Shodex IC SI-90 4E (4.0 mm I.D. x 250 mm)
Eluent       : 1.8 mM Na2CO3 + 1.7 mM NaHCO3 + CH3CN 
Flow rate    : 1.0 mL/min
Column temp. : 25°C

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