SEDL / STP / STP573-EB / STP39004S

Rapid Determination of Cyanide in Waste Waters

Bhargava, OP
Supervisor, Analytical Chemistry, chemical technologist, and general supervising metallurgist, Metallurgical and Chemical Laboratories, The Steel Company of Canada, Ltd., Hamilton, Ontario

Deline, GW
Supervisor, Analytical Chemistry, chemical technologist, and general supervising metallurgist, Metallurgical and Chemical Laboratories, The Steel Company of Canada, Ltd., Hamilton, Ontario

Hines, WG
Supervisor, Analytical Chemistry, chemical technologist, and general supervising metallurgist, Metallurgical and Chemical Laboratories, The Steel Company of Canada, Ltd., Hamilton, Ontario

Pages: 6    Published: Jan 1975

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Abstract

A simple, direct, and rapid method is presented for the determination of cyanide in waste waters employing a selective ion electrode. The method can tolerate up to 100 ppm of sulfide in the sample and incidentally detects sulfide down to 0.05 ppm. The range of the method is 0.03 to 100 ppm cyanide and a single determination can be completed in about 3 min including the filtration of sulfide, if present, in the sample. The method has been in routine operation for about three years.