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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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34 citations
34 citations
TL;DR: For the first-order reaction preceding the electrode reaction in pulse polarography, exact equations for the instantaneous and the average current (including the firstorder spherical correction term) have been derived under the condition ⪢I, where k 1 and k 2 are the rate constants of the chemical reaction as discussed by the authors.
33 citations
TL;DR: In this article, the use of this electrode in differential pulse anodic stripping voltammetry enables the direct determination of lead in natural water samples without the elimination of the presence of surface-active substances or the dissolved oxygen.
Abstract: Silver composite electrode prepared from silver and graphite powder and meth-acrylate resin presents a suitable sensor for the voltammetric measurements. Cathodic polarization of this electrode enables the determination of nitrates, nitrites, organic nitro compounds, and halide ions. The use of this electrode in differential pulse anodic stripping voltammetry enables the direct determination of lead in natural water samples without the elimination of the presence of surface-active substances or the dissolved oxygen. The effect of under potential deposition at the composite electrode differs from that effect produced by metallic silver electrode mainly at low concentrations of the deposited metal.
33 citations
TL;DR: In this article, the electrochemical behavior of six triazine herbicides (atrazine, terbutylazine, desmetryne, prometryne and terbutryne) was studied by fast scan differential pulse voltammetry (FSDPV) at a static mercury drop electrode and by constant potential coulometry.
Abstract: The electrochemical behaviour of six triazine herbicides (atrazine, terbutylazine, desmetryne, prometryne, terbutryne and methoprotryne) was studied by fast scan differential pulse voltammetry (FSDPV) at a static mercury drop electrode and by constant potential coulometry. The adsorption of these compounds at the mercury electrode was employed for their determination by adsorptive stripping voltammetry (AdSV) in Britton-Robinson buffers. The detection limits calculated from regression analyses ranged between 0.1 and 0.9 μg/l. Preconcentration (solid phase extraction on a C18 column) was used for the determination of very low contents in water samples. The recovery was 97–99.6%.
33 citations