Polarographic maxima suppressive effects of carbon black in dimethylformamide

Abstract

The suppressive effect on the polarographic maxima was observed by dispersing carbon black in the sample solutions of antimony (V) chloride, tin (IV) chloride and thallium (I) chloride in dimethylformamide. Carbon blacks {Excellsior (20 nm), # 600 (14nm) and Corax-L (23 nm)} was dispersed by a ultrasonic irradiation method. Optimum dispersion range of carbon black was (0.150.8)%. It was observed from the polarograms of the investigated metal ions that the suppressive effect of maxima was not affected by the kind of supporting electrolyte. The reduction waves of the surface functional group and the other metal ions on carbon black were not observed in blank test.