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

Total cyanide in river water was analysed using DEAE-825 (a column for weak anion exchange chromatography) and an electrochemical detector (ECD).

Sample : 100micro-L of distilled river water (water)

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

RSpak KC-811 6E is suitable for the analysis of cyanide ion and cyanogen chloride, fulfills required measurement for drinking-water regulation in Japan.

Sample : 10micro-g/L each, 100micro-L
CN–, Cyanide ion
CNCl, Cyanogen chloride

Column       : Shodex RSpak KC-811 6E (6.0mmID*250mm)
Eluent       : 1.0mM H2SO4 aq.
Reagent A    : Chloramine T solution
Reagent B    : 4-Pyridinecarboxylic acid-Pyrazolone solution
Flow rate    : (Eluent); 1.0mL/min
               (Reagent); 0.5mL/min each
Detector     : VIS(638nm)
Column temp. : 40deg-C
Reaction temp. : (Reagent A); 40deg-C
                 (Reagent B); 80deg-C