Differential pulse polarograms of control (untreated) samples are shown in Fig.
However, in differential pulse polarograms of TBZ9-treated samples, again the intensity of the second peak is twice the intensity of the first peak, showing that TBZ9 reduces Fe(III) to metallic Fe.
1 M electrolyte (taken as 1 mL from 1 M stock solution prepared in methanol) was first run by DPP method at optimized conditions in order to get a background polarogram in the potential range of -1.
Moreover, the peak potential is shifted towards lower values which results in a sharper and better shaped polarogram.
Selection of mode Various modes of polarography and voltammetry were checked to get enhanced polarograms and voltammograms.
and cyclic voltammograms were recorded after establishing current-voltage baselines in solutions absent the reductant.