Note in connexion with dropping-mercury electrodes

Connexion with Operator Semigroups

Voltammetric Behaviour of Metronidazole at Mercury Electrodes

Metronidazol é o fármaco mais importante do grupo de 5-nitroimidazoles, possuindo toxicidade contra microrganismos anaeróbicos, sendo a molécula de DNA o principal alvo de sua ação biológica. O mecanismo de ação do metronidazol depende do processo de redução do grupo nitro e, em meio ácido, a redução é pH-dependente envolvendo quatro elétrons na completa redução ao derivado hidroxilamínico. Em ...

Electrochemical Kinetic Measurements and Metal Speciation with the Vibrating Dropping Mercury Electrode

The vibrating dropping mercury ele·ctrode (VDME) is applied to the characterization of ionic species and to electroanalytical measurements of metal ion concentrations in water samples strongly polluted with different kinds of surface active substances (SAS). The Cd2+ /CdNTAsystem in citrate buffer solution at pH = 6 was chosen as a model for the effect of a preceeddng homogeneous chemical react...

AC Electrophoresis; Deposition of Ceramic Nanaoparticles on In-plane Electrodes at Low Frequencies (RESEARCH NOTE)

Deposition of ceramic nanoparticles (dispersed in a non-aqueous suspension) on in-plane electrodes and under the influence of AC electric fields in the frequency range of 0.01 Hz - 10 kHz is investigated. Analysis of the particle response to the applied field is a difficult task due to the mutual effect of electric- and hydrodynamic force which are present in the system. In this work, however, ...

Electric-Field-Induced Transitions of Amphiphilic Layers on Mercury Electrodes

There are numerous examples in the literature of amphiphilic molecules which, when adsorbed onto mercury electrodes, undergo electric-field-induced transitions between different molecular conformations. In general, very sharp and reversible voltammetric features associated with these transitions are observed when the electrode potential is scanned in the negative direction, typically over the r...