Improvement in the flow injection spectrophotometric determiantion o fzinc withzincon through elevated temperatures

摘要

The enhancement of the performance of the zincon method at elevated temperatures is described.The technique exploits the acquired kinetic energy brought about by raising the temperature rapidly and specifically de-masking the cyanide-metalcomplexes with cyclohexanone.The rate of determination is increased from 80 to 120 samples per hour due the reduction period of the rate-determining step.The reduction of the reaction time eliminates interferences.Thes teel wool.The % relative standard deviation (RSD) was found to be less than 0.5 with a percentage recovery of 97%.The results of the proposed FIA system compare favourably with those obtained for a standard IC- procedure.