Effects of added acetonitrile on the retention time (SI-90 4E)

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?L
F^– 2mg/L
Cl^– 3mg/L
NO₂^– 5mg/L
Br^– 10mg/L
NO₃^– 10mg/L
PO₄^3- 15mg/L
SO₄^2- 15mg/L
I^– 50mg/L
S₂O₃^2- 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