Cyanide ions, spectrophotometry

Tominaga MY, Midio AF. Modified method for the determination of thiocyanate in urine by ion-exchange chromatography and spectrophotometry. Rev Farm Bioquim Univ Sao Paulo, 1991 27 100-105. Tomoda A, Hashimoto K. The determination of cyanide in water and biological tissues by methemoglobin. 

The ionic pairing reagent necessarily introduces a counterion into the system. This ion preferably should be different from any of the sample ions to be determined. Some of the most useful separations are of organic ions or ionic inorganic complexes. The separation of eight metal cyanide complexes in Fig. 9.5 would be difficult to accomplish by conventional ion chromatography. Detection in this case was by direct spectrophotometry at 214 nm. 

Cuprous cyanide is dissolved in hot dilute HCl and the solution is analyzed for copper by atomic absorption spectrophotometry. Cyanide may be analyzed by selective-ion electrode. 

Cyanide Toxic pollutant Spectrophotometry, potentiometry, ion chromatography... 

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