Abstract
A continuous system for the determination of free and complex cyanides has been developed. Hydrogen cyanide is released in an acidic solution in a counter-current system operated by a peristaltic pump, absorbed in dilute sodium hydroxide and then fed into the amperometric detector with a cylindrical silver flow-through electrode. The parameters affecting the release and absorption of cyanide, as well as the electrode response and sensitivity, are described. Differentiation between total cyanide and strongly bound metal cyanide complexes is achieved by u.v. decomposition of the complexes.
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