Abstract
Abstract The dropping mercury electrode polarographic behavior of sulfur and selenium solutions in hydrazine hydrate has been studied in highly alkaline aqueous solution containing supporting electrolyte of 0.1 M ammonium tartrate (1 M=l mol dm−3). Both the sulfur and selenium revealed a composite anodic–cathodic waves. The values of E1⁄2 for sulfur and selenium solutions, taken from the cathodic wave of the polarograms corresponded to E1⁄2=−0.78 and −1.03 V vs. SCE respectively. The effect of mercury pressure and concentration of depolarizer on the relative magnitude of the wave heights has also been studied on the basis of typical reactions involved at DME in this solvent medium. No maxima supressor was used in the present study for both cases.
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