S. Sriman Narayanan

TL;DR: The bimediator modified electrode was found to exhibit good stability and reproducibility and electrocatalytic activity towards oxidation of gallic acid with NiHCF and reduction of hydrogen peroxide with TH was evaluated.

TL;DR: In this article, an aqueous insoluble new redox mediator ruthenium(III)-diphenyldithiocarbamate has been used as a modifier to prepare a carbon paste electrode.

TL;DR: The method of fabrication of Hg(II)/MWCNT modified graphite electrode clearly suggests a safe route for preparing Hg immobilized electrode for stripping analysis and well-defined peaks with low background current under a short deposition time are suggested.

TL;DR: The CuHCF film modified electrode displayed an excellent reproducibility towards the real time analysis of L-Trp in commercial milk samples and showed a very low charge transfer resistance to the electron transfer kinetics of Fe(II)/Fe(III) reactions.

Abstract: Surface modification of graphite electrode with nickel hexacyanoferrate (NiHCF) film through 2-mercaptoethylamine (MEA) capped gold nanoparticle (GNP) was achieved by a novel fabrication approach. The NiHCF modified electrode exhibits a distinct pair of redox peaks corresponding to anodic and cathodic reactions of hexacyanoferrate (II/III) of NiHCF with a formal potential of 0.33 V versus SCE. l -Dopa, is a potential chemotherapeutic drug used for the treatment of a neurodegenerative disease like Parkinson's disease (PD). l -Dopa was successfully determined by NiHCF modified electrode in the concentration range of 0.82 μM to 2.5 mM with a good sensitivity of 0.363 μA/μM. A reduction in overpotential of 200 mV with a detection limit of 0.53 μM was obtained. Determination of l -dopa in commercial tablets was also investigated by the proposed sensor.