Combining IEC DEAE-825 (a column for weak anion exchange chromatography) with an electrochemical detector (ECD) has permitted sensitive detection of cyanide. With this method, the detection limit of cyanide is 0.2 μg/L.


Sample : CN^-

Column       : Shodex IEC DEAE-825 (8.0 mm I.D. x 75 mm)
Eluent       : (10 mM Sodium carbonate + 1 mM Ethylenediamine) aq./CH3OH=90/10
Flow rate    : 1.0 mL/min
Detector     : ECD (Electrode; Ag 0 mV SCE)
Column temp. : 40 °C