A plan was developed which could measure the amount of thiocyanate and most cyanide species in an assortment of samples. The particulars of the system and the specific tests it performed were explained. In addition, the effects of temperature, pH, time and ionic strength on the results were interpreted in an effort to understand the analytical conduct of the cyanide species. Also the various types of interferences, their effects and distribution of cyanide-thiocyanate in the environment were discussed.