Microdetermination Of Some Organic Nitriles Using The Cyanide Ion Selective Electrode
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The response characteristics of the solid state cyanide ion selective electrode toward some organic nitriles are investigated. In 10 M KOH solution, the electrode exhibits near Nemstian response over the range of 10~2 to lO-'M of various substituted benzylnitriles with an anionic slope of 53 - 59 mV/concentration decade. The response time varies from 2 to 15 minutes depending on both the nature of the substituent group and the concentration of the nitrite compound. Direct potentiometric measurement of some nitrites at the level of 0.01 to 1 mg/ml shows an average recovery of 98.2% and a standard deviation of 2.3%. Many nitrogen functional groups do not interfere.