The role of the electrode nanoporosity in electroanalytical processes is discussed and specific phenomena (slow double layer charging, local pH effects) which can be present in porous electrode are described. Hierarchical porous carbon (HPC) materials are synthesized using a hard template method. The three dimensional carbon porosity is examined using scanning electron microscopy on flat surfac...

Integrating the advantages of screen printing technology with the encouraging electroanalytical characteristic of metallic bismuth, we developed an ultrasensitive and disposable screen-printed bismuth electrode (SPBE) modified with multi-walled carbon nanotubes (MWCNTs) for electrochemical stripping measurements. Metallic bismuth powders and MWCNTs were homogeneously mixed with graphite-carbon ...

A unified model is developed to analyze the key features of the chemical secretion process observed in experimental studies of various vesicles with application to electroanalytical measurements of vesicular exocytosis. The intimately coupled dynamics and kinetics are simultaneously resolved based on continuum fluid flow, mass transport, and linear elasticity theories combined with biomembrane ...

Tuberculosis remains a major public health problem, especially in developing countries. Brazil presents the largest number of cases in Latin America and is among the 22 countries considered priorities by the World Health Organization (WHO). The Rio de Janeiro state has the largest number of cases registered in the country. The treatment of patients, commonly, makes use of the drugs isoniazid an...

Square-wave voltammetry was used to explore the adsorption property of cefadroxil complex with copper ions on the hanging mercury drop electrode (HMDE). By employing the adsorptive stripping voltammetric approach, a sensitive electroanalytical method for the quantitative analysis of cefadroxil antibiotic was achieved. A welldeveloped voltammetric peak was obtained in pH 10 Britton-Robinson buff...

A rapid and reliable oxygen elimination system was evaluated here for the electroanalytical study of metals. Dissolved removed locally in vicinity a sensor by means electrochemical filter constructed from platinum grids. Three metals (Cd, Pb, Zn) were determined stripping chronopotentiometry (SCP) at mercury film screen-printed electrode. Limits detection nanomolar range under optimized experim...

Guest editor Toshio Fuchigami discusses the history and current status of organic electrochemistry in his editorial. Three years after invention Voltaic pile 1800, Petrov Russia published a paper on electrolysis alcohols aliphatic oils. A year that, Grotthuss Lithuania found that diluted solution indigo white could be readily electrochemically oxidized to blue. In 1833, Faraday discovered Farad...