Electrochemical detection

In this study, platinum (Pt) microelectrodes are modified with electrochemically reduced graphene oxide (ERGO) using a simple and effective protocol. These Pt/ERGO microelectrodes are able to be used as electrochemical sensors for direct and rapid detection of ascorbic acid (AA) in aqueous solutions using linear sweep voltammetry (LSV) measurements.

6p vikwong 29-09-2024 5 1   Download

This study aims to develop an electrochemical immunosensor for detecting ENaC using a screen-printed carbon electrode (SPCE), which was modified with reduced graphene oxide (RGO).

10p tocectocec 25-05-2020 12 0   Download

This paper describes the development of electrochemical label- free DNA sensor for detection of transgenic in Round–up Ready Soybean (herbicide tolerance). Two pairs of electrodes which the optimized dimension is 70µm x 30µm (the width of electrode x inter-distance between fingers), were fabricated on a chip for differential measures.

4p uocvong04 24-09-2015 30 2   Download

Micellar Electrokinetic Capillary Chromatography (MEKC) was employed to the analysis of aniline, phenol and 2,5-dinitrophenol using an end-column amperometric detector with a carbon cloth electrode. The current condition of separation is a solution of 25 mM Na2HPO4, 25 mM Na2B4O7, and 50 mM SDS (pH 9.11); applied voltage, 10 kV; hydrodynamic injection for 15 s at 15 cm; applied potential for electrochemical detection, 500 mV. Absorbance electropherograms is also recorded for comparison.

4p uocvong04 24-09-2015 49 2   Download

The electrooxidation of 5-hydroxy-1,4-naphthoquinone (JUG) in organic media leads to conducting polymer film on glassy and Pt electrodes. The IR ex situ, IR in situ (MIRFTIRS) during the film formation, XPS studies indicate that electropolymerization occurs via the OH group while quinone group on the other ring remains intact and shows a very good electro activity and stability in different media, particularly in aqueous, biocompatible one.

5p uocvong03 24-09-2015 56 3   Download

For the first time, the detection of DNA sequences, related to HIV (found in AIDS patients), using Methylene Blue (MB) as the redox indicator was performed. The voltametric signals have been investigated on bared chitosan (CS) modified; probe immobilized (DNA single strand) and target-hybridized (DNA double strand) electrodes sequentially by means of Cyclic Voltammetry (CV) and Square Wave Voltammetry (SWV). The response of hybridization between the probe and perfectly complementary, double-base mismatch, single-base mismatch of analyzed targets were clearly identified.

5p uocvong03 24-09-2015 38 2   Download

The synthesis and involvement of H2O2 during the early stages of melano-genesis involving the oxidations of DOPA and dopamine (diphenolase activity) were established by two sensitive and specific electrochemical detection systems. Catalase-treated reaction mixtures showed diminished rates of H2O2 production during the autoxidation and tyrosinase-mediated oxidation of both diphenols.

0p awards 06-04-2013 32 3   Download

This book focuses on the basic electrochemical applications of DNA in various areas, from basic principles to the most recent discoveries. The book comprises theoretical and experimental analysis of various properties of nucleic acids, research methods, and some promising applications.

59p beobobeo 01-08-2012 103 23   Download