Herein the modifications of a glassy carbon electrode (GCE) with palladium nanoparticles and a palladium film are reported. The response to hydrogen peroxide on the modified electrode was examined using cyclic voltammetry and amperometry (at –0.2 V vs. Ag/AgCl reference electrode in the phosphate buffer solution, pH 7.4). The palladium film and palladium nanoparticle-modified GCE showed a linea...

Electrochemical sensors and biosensors based on inhibition are sensitive methods to determine the concentration of toxic substances in environment and clinic applications. Heavy metal cations bind to biological molecules and inactive important enzyme systems, such as acetylcholinesterase (AChE). In this paper, the amperometric sensors and biosensors based on AChE inhibition were developed using...

The time responses of two electrochemical methods, amperometry (AMP) and cyclic voltammetry (CV), used in a microchannel to detect the concentration variations of an outer-sphere redox species were compared. Overall, our results show that the temporal resolution of AMP is superior to the one of CV. As no secondary reaction (formation of chemical bounds, adsorption, etc.) can hinder the detectio...

The present study reports the development and application of a flow injection analysis (FIA) system for simultaneous determination uric acid (UA) caffeine (CAF) using cathodically pretreated boron-doped diamond electrode (CPT-BDD) multiple-pulse amperometry (MPA). electrochemical profiles UA CAF were analyzed via cyclic voltammetry in potential range 0.20–1.7 V 0.10 mol L−1 H2SO4 solution as su...