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

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


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