Abstract:OVEL polyvinyl chloride (PVC) potentiometric sensors are constructed for determination of variamine blue (VB). Different methods for electrode fabrication including; modification with the VB-TPB ion pair, modification with sodium tetraphenylborate or soaking of the plain electrode in the ion-pair suspension, have been described. Electrode matrix compositions were optimized on the basis of effects of type and content of the modifier as well as influence of the plasticizers. The fabricated electrodes worked sati… Show more
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