Detection Limit of Cyanide

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 micro-g/L.


Sample : CN^-

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