Topic
Polarography
About: Polarography is a research topic. Over the lifetime, 4772 publications have been published within this topic receiving 75478 citations.
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TL;DR: In this paper, the potentialities of normal pulse polarography and phase-sensitive ac polarography (out-of-phase mode) in connection with the DME for the study of the adsorption and interfacial behaviour of nucleotides were explored.
36 citations
TL;DR: A procedure based on differential pulse polarography is described for the determination of manganese at ng ml levels in fresh, estuarine and sea-water buffered at pH 9.5 with a citrate-borate solution that also serves as supporting electrolyte.
36 citations
TL;DR: Behavior of hydrogen peroxide in alkaline medium has been studied by direct current (DC) polarography with dropping mercury electrode (DME) aiming to apply it in antioxidant (AO) activity determination and the assay versatility has been confirmed on various complex samples.
36 citations
TL;DR: In this article, the electrochemical behavior of the Ag/Ag+, Fe/Fe2+, Fe2+/Fe3+, and Cu/Cu+, Cu+/Cu2+ systems in the equimolar region of has been investigated using potentiometry, pulse polarography, cyclic voitammetry, chronoamperometry, and chronopotentiometry.
Abstract: The electrochemical behavior of the Ag/Ag+, Fe/Fe2+, Fe2+/Fe3+ , and Cu/Cu+, Cu+/Cu2+ systems in the equimolar region of has been investigated using potentiometry, pulse polarography, cyclic voitammetry, chronoamperometry, and chronopotentiometry. In contrast to the Al electrode, the emf of the Ag+/Ag electrode was found to be virtually independent of the melt composition. The Ag+ was found to undergo reversible deposition at a tungsten electrode. However, in cyclic voltammetric experiments, the stripping process showed a marked dependence on Ag+ concentration, temperature, and sweep rate. Possible explanations for this dependence are presented. The diffusion coefficient for Ag+ at 175δC was found to be . The Fe3+/Fe2+ couple was found to be reversible while the Fe2+/Fe couple showed typical deposition‐stripping behavior. Above an initial concentration of 5 mM the deposition process became concentration independent while the stripping process was found to involve two different electrode reactions. This behavior was consistent with the low solubility of in the equimoiar region. Nernst plots for the anodization of Cu gave low n‐values in Cl‐rich melts, while n‐values of 1 were obtained in ‐rich melts. These results are best explained by introducing the following equilibrium reaction for which a value of was calculated for . The two Cu couples were well behaved electrochemically.
36 citations
36 citations